CINXE.COM

<!doctype html><html amp lang="en" i-amphtml-binding i-amphtml-layout i-amphtml-no-boilerplate transformed="self;v=1"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width"><link rel="preload" href="/static/fonts/poppins-v5-latin-700.woff2" as="font" crossorigin><link rel="preload" href="/static/fonts/noto-sans-v7-latin-700.woff2" as="font" crossorigin><meta name="theme-color" content="#005af0"><meta name="description" content="There are many ways to get help for questions and issues related to AMP:"><meta name="twitter:card" content="summary_large_image"><meta name="twitter:description" content="There are many ways to get help for questions and issues related to AMP:"><meta name="twitter:title" content="Help"><meta name="twitter:creator" content="@ampproject"><meta name="twitter:site" content="@ampproject"><meta name="twitter:image" content="https://amp.dev/static/img/sharing/default-600x314.png"><meta property="og:title" content="Help"><meta property="og:url" content="https://amp.dev/support/"><meta property="og:image" content="https://amp.dev/static/img/sharing/default-600x314.png"><meta property="og:image:width" content="600"><meta property="og:image:height" content="314"><meta name="supported-amp-formats" content="websites,email,stories,ads"><meta name="page-locale" content="en,de,fr,ar,es,it,id,ja,ko,pt_br,ru,tr,zh_cn,pl,vi"><meta http-equiv="origin-trial" content="AviuuiVhVdQ3GpVtxSpyMT+XsL/qGGYmyiyLvYSKPL3rRDLipe/ard5x+DXVlrATtolwX75VtpSKc9IEzLDd4AkAAABmeyJvcmlnaW4iOiJodHRwczovL2FtcC5kZXY6NDQzIiwiZmVhdHVyZSI6IkV4cGVyaW1lbnRhbEF1dG9wbGF5RHluYW1pY0RlbGVnYXRpb24iLCJleHBpcnkiOjE1NzA1Nzg0NDF9"><style amp-runtime i-amphtml-version="012406131415000">html{overflow-x:hidden!important}html.i-amphtml-fie{height:100%!important;width:100%!important}html:not([amp4ads]),html:not([amp4ads]) body{height:auto!important}html:not([amp4ads]) body{margin:0!important}body{-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%;-ms-text-size-adjust:100%;text-size-adjust:100%}html.i-amphtml-singledoc.i-amphtml-embedded{-ms-touch-action:pan-y pinch-zoom;touch-action:pan-y pinch-zoom}html.i-amphtml-fie>body,html.i-amphtml-singledoc>body{overflow:visible!important}html.i-amphtml-fie:not(.i-amphtml-inabox)>body,html.i-amphtml-singledoc:not(.i-amphtml-inabox)>body{position:relative!important}html.i-amphtml-ios-embed-legacy>body{overflow-x:hidden!important;overflow-y:auto!important;position:absolute!important}html.i-amphtml-ios-embed{overflow-y:auto!important;position:static}#i-amphtml-wrapper{overflow-x:hidden!important;overflow-y:auto!important;position:absolute!important;top:0!important;left:0!important;right:0!important;bottom:0!important;margin:0!important;display:block!important}html.i-amphtml-ios-embed.i-amphtml-ios-overscroll,html.i-amphtml-ios-embed.i-amphtml-ios-overscroll>#i-amphtml-wrapper{-webkit-overflow-scrolling:touch!important}#i-amphtml-wrapper>body{position:relative!important;border-top:1px solid transparent!important}#i-amphtml-wrapper+body{visibility:visible}#i-amphtml-wrapper+body .i-amphtml-lightbox-element,#i-amphtml-wrapper+body[i-amphtml-lightbox]{visibility:hidden}#i-amphtml-wrapper+body[i-amphtml-lightbox] .i-amphtml-lightbox-element{visibility:visible}#i-amphtml-wrapper.i-amphtml-scroll-disabled,.i-amphtml-scroll-disabled{overflow-x:hidden!important;overflow-y:hidden!important}amp-instagram{padding:54px 0px 0px!important;background-color:#fff}amp-iframe iframe{box-sizing:border-box!important}[amp-access][amp-access-hide]{display:none}[subscriptions-dialog],body:not(.i-amphtml-subs-ready) [subscriptions-action],body:not(.i-amphtml-subs-ready) [subscriptions-section]{display:none!important}amp-experiment,amp-live-list>[update]{display:none}amp-list[resizable-children]>.i-amphtml-loading-container.amp-hidden{display:none!important}amp-list [fetch-error],amp-list[load-more] [load-more-button],amp-list[load-more] [load-more-end],amp-list[load-more] [load-more-failed],amp-list[load-more] [load-more-loading]{display:none}amp-list[diffable] div[role=list]{display:block}amp-story-page,amp-story[standalone]{min-height:1px!important;display:block!important;height:100%!important;margin:0!important;padding:0!important;overflow:hidden!important;width:100%!important}amp-story[standalone]{background-color:#000!important;position:relative!important}amp-story-page{background-color:#757575}amp-story .amp-active>div,amp-story .i-amphtml-loader-background{display:none!important}amp-story-page:not(:first-of-type):not([distance]):not([active]){transform:translateY(1000vh)!important}amp-autocomplete{position:relative!important;display:inline-block!important}amp-autocomplete>input,amp-autocomplete>textarea{padding:0.5rem;border:1px solid rgba(0,0,0,.33)}.i-amphtml-autocomplete-results,amp-autocomplete>input,amp-autocomplete>textarea{font-size:1rem;line-height:1.5rem}[amp-fx^=fly-in]{visibility:hidden}amp-script[nodom],amp-script[sandboxed]{position:fixed!important;top:0!important;width:1px!important;height:1px!important;overflow:hidden!important;visibility:hidden} /*# sourceURL=/css/ampdoc.css*/[hidden]{display:none!important}.i-amphtml-element{display:inline-block}.i-amphtml-blurry-placeholder{transition:opacity 0.3s cubic-bezier(0.0,0.0,0.2,1)!important;pointer-events:none}[layout=nodisplay]:not(.i-amphtml-element){display:none!important}.i-amphtml-layout-fixed,[layout=fixed][width][height]:not(.i-amphtml-layout-fixed){display:inline-block;position:relative}.i-amphtml-layout-responsive,[layout=responsive][width][height]:not(.i-amphtml-layout-responsive),[width][height][heights]:not([layout]):not(.i-amphtml-layout-responsive),[width][height][sizes]:not(img):not([layout]):not(.i-amphtml-layout-responsive){display:block;position:relative}.i-amphtml-layout-intrinsic,[layout=intrinsic][width][height]:not(.i-amphtml-layout-intrinsic){display:inline-block;position:relative;max-width:100%}.i-amphtml-layout-intrinsic .i-amphtml-sizer{max-width:100%}.i-amphtml-intrinsic-sizer{max-width:100%;display:block!important}.i-amphtml-layout-container,.i-amphtml-layout-fixed-height,[layout=container],[layout=fixed-height][height]:not(.i-amphtml-layout-fixed-height){display:block;position:relative}.i-amphtml-layout-fill,.i-amphtml-layout-fill.i-amphtml-notbuilt,[layout=fill]:not(.i-amphtml-layout-fill),body noscript>*{display:block;overflow:hidden!important;position:absolute;top:0;left:0;bottom:0;right:0}body noscript>*{position:absolute!important;width:100%;height:100%;z-index:2}body noscript{display:inline!important}.i-amphtml-layout-flex-item,[layout=flex-item]:not(.i-amphtml-layout-flex-item){display:block;position:relative;-ms-flex:1 1 auto;flex:1 1 auto}.i-amphtml-layout-fluid{position:relative}.i-amphtml-layout-size-defined{overflow:hidden!important}.i-amphtml-layout-awaiting-size{position:absolute!important;top:auto!important;bottom:auto!important}i-amphtml-sizer{display:block!important}@supports (aspect-ratio:1/1){i-amphtml-sizer.i-amphtml-disable-ar{display:none!important}}.i-amphtml-blurry-placeholder,.i-amphtml-fill-content{display:block;height:0;max-height:100%;max-width:100%;min-height:100%;min-width:100%;width:0;margin:auto}.i-amphtml-layout-size-defined .i-amphtml-fill-content{position:absolute;top:0;left:0;bottom:0;right:0}.i-amphtml-replaced-content,.i-amphtml-screen-reader{padding:0!important;border:none!important}.i-amphtml-screen-reader{position:fixed!important;top:0px!important;left:0px!important;width:4px!important;height:4px!important;opacity:0!important;overflow:hidden!important;margin:0!important;display:block!important;visibility:visible!important}.i-amphtml-screen-reader~.i-amphtml-screen-reader{left:8px!important}.i-amphtml-screen-reader~.i-amphtml-screen-reader~.i-amphtml-screen-reader{left:12px!important}.i-amphtml-screen-reader~.i-amphtml-screen-reader~.i-amphtml-screen-reader~.i-amphtml-screen-reader{left:16px!important}.i-amphtml-unresolved{position:relative;overflow:hidden!important}.i-amphtml-select-disabled{-webkit-user-select:none!important;-ms-user-select:none!important;user-select:none!important}.i-amphtml-notbuilt,[layout]:not(.i-amphtml-element),[width][height][heights]:not([layout]):not(.i-amphtml-element),[width][height][sizes]:not(img):not([layout]):not(.i-amphtml-element){position:relative;overflow:hidden!important;color:transparent!important}.i-amphtml-notbuilt:not(.i-amphtml-layout-container)>*,[layout]:not([layout=container]):not(.i-amphtml-element)>*,[width][height][heights]:not([layout]):not(.i-amphtml-element)>*,[width][height][sizes]:not([layout]):not(.i-amphtml-element)>*{display:none}amp-img:not(.i-amphtml-element)[i-amphtml-ssr]>img.i-amphtml-fill-content{display:block}.i-amphtml-notbuilt:not(.i-amphtml-layout-container),[layout]:not([layout=container]):not(.i-amphtml-element),[width][height][heights]:not([layout]):not(.i-amphtml-element),[width][height][sizes]:not(img):not([layout]):not(.i-amphtml-element){color:transparent!important;line-height:0!important}.i-amphtml-ghost{visibility:hidden!important}.i-amphtml-element>[placeholder],[layout]:not(.i-amphtml-element)>[placeholder],[width][height][heights]:not([layout]):not(.i-amphtml-element)>[placeholder],[width][height][sizes]:not([layout]):not(.i-amphtml-element)>[placeholder]{display:block;line-height:normal}.i-amphtml-element>[placeholder].amp-hidden,.i-amphtml-element>[placeholder].hidden{visibility:hidden}.i-amphtml-element:not(.amp-notsupported)>[fallback],.i-amphtml-layout-container>[placeholder].amp-hidden,.i-amphtml-layout-container>[placeholder].hidden{display:none}.i-amphtml-layout-size-defined>[fallback],.i-amphtml-layout-size-defined>[placeholder]{position:absolute!important;top:0!important;left:0!important;right:0!important;bottom:0!important;z-index:1}amp-img[i-amphtml-ssr]:not(.i-amphtml-element)>[placeholder]{z-index:auto}.i-amphtml-notbuilt>[placeholder]{display:block!important}.i-amphtml-hidden-by-media-query{display:none!important}.i-amphtml-element-error{background:red!important;color:#fff!important;position:relative!important}.i-amphtml-element-error:before{content:attr(error-message)}i-amp-scroll-container,i-amphtml-scroll-container{position:absolute;top:0;left:0;right:0;bottom:0;display:block}i-amp-scroll-container.amp-active,i-amphtml-scroll-container.amp-active{overflow:auto;-webkit-overflow-scrolling:touch}.i-amphtml-loading-container{display:block!important;pointer-events:none;z-index:1}.i-amphtml-notbuilt>.i-amphtml-loading-container{display:block!important}.i-amphtml-loading-container.amp-hidden{visibility:hidden}.i-amphtml-element>[overflow]{cursor:pointer;position:relative;z-index:2;visibility:hidden;display:initial;line-height:normal}.i-amphtml-layout-size-defined>[overflow]{position:absolute}.i-amphtml-element>[overflow].amp-visible{visibility:visible}template{display:none!important}.amp-border-box,.amp-border-box *,.amp-border-box :after,.amp-border-box :before{box-sizing:border-box}amp-pixel{display:none!important}amp-analytics,amp-auto-ads,amp-story-auto-ads{position:fixed!important;top:0!important;width:1px!important;height:1px!important;overflow:hidden!important;visibility:hidden}amp-story{visibility:hidden!important}html.i-amphtml-fie>amp-analytics{position:initial!important}[visible-when-invalid]:not(.visible),form [submit-error],form [submit-success],form [submitting]{display:none}amp-accordion{display:block!important}@media (min-width:1px){:where(amp-accordion>section)>:first-child{margin:0;background-color:#efefef;padding-right:20px;border:1px solid #dfdfdf}:where(amp-accordion>section)>:last-child{margin:0}}amp-accordion>section{float:none!important}amp-accordion>section>*{float:none!important;display:block!important;overflow:hidden!important;position:relative!important}amp-accordion,amp-accordion>section{margin:0}amp-accordion:not(.i-amphtml-built)>section>:last-child{display:none!important}amp-accordion:not(.i-amphtml-built)>section[expanded]>:last-child{display:block!important} /*# sourceURL=/css/ampshared.css*/</style><script async src="https://cdn.ampproject.org/v0.mjs" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0.js" crossorigin="anonymous"></script><script async src="https://cdn.ampproject.org/v0/amp-analytics-0.1.mjs" custom-element="amp-analytics" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-analytics-0.1.js" crossorigin="anonymous" custom-element="amp-analytics"></script><script async src="https://cdn.ampproject.org/v0/amp-bind-0.1.mjs" custom-element="amp-bind" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-bind-0.1.js" crossorigin="anonymous" custom-element="amp-bind"></script><script async src="https://cdn.ampproject.org/v0/amp-consent-0.1.mjs" custom-element="amp-consent" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-consent-0.1.js" crossorigin="anonymous" custom-element="amp-consent"></script><script async src="https://cdn.ampproject.org/v0/amp-geo-0.1.mjs" custom-element="amp-geo" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-geo-0.1.js" crossorigin="anonymous" custom-element="amp-geo"></script><script async src="https://cdn.ampproject.org/v0/amp-install-serviceworker-0.1.mjs" custom-element="amp-install-serviceworker" type="module" crossorigin="anonymous"></script><script async nomodule src="https://cdn.ampproject.org/v0/amp-install-serviceworker-0.1.js" crossorigin="anonymous" custom-element="amp-install-serviceworker"></script><link rel="shortcut icon" href="/static/img/favicon.png"><link rel="canonical" href="https://amp.dev/support/"><link rel="alternate" hreflang="x-default" href="https://amp.dev/support/"><link rel="alternate" hreflang="de" href="https://amp.dev/de/support/"><link rel="alternate" hreflang="fr" href="https://amp.dev/fr/support/"><link rel="alternate" hreflang="ar" href="https://amp.dev/ar/support/"><link rel="alternate" hreflang="es" href="https://amp.dev/es/support/"><link rel="alternate" hreflang="it" href="https://amp.dev/it/support/"><link rel="alternate" hreflang="id" href="https://amp.dev/id/support/"><link rel="alternate" hreflang="ja" href="https://amp.dev/ja/support/"><link rel="alternate" hreflang="ko" href="https://amp.dev/ko/support/"><link rel="alternate" hreflang="pt_BR" href="https://amp.dev/pt_br/support/"><link rel="alternate" hreflang="ru" href="https://amp.dev/ru/support/"><link rel="alternate" hreflang="tr" href="https://amp.dev/tr/support/"><link rel="alternate" hreflang="zh_CN" href="https://amp.dev/zh_cn/support/"><link rel="alternate" hreflang="pl" href="https://amp.dev/pl/support/"><link rel="alternate" hreflang="vi" href="https://amp.dev/vi/support/"><title>Help - amp.dev</title><script type="application/ld+json">{"@context":"http://schema.org","@type":"Webpage","url":"https://amp.dev/support/ ","name":"amp.dev","headline":"Help","description":"There are many ways to get help for questions and issues related to AMP:","mainEntityOfPage":{"@type":"WebPage","@id":"https://amp.dev"},"publisher":{"@type":"Organization","name":"AMP Project","logo":{"url":"https://amp.dev/static/img/icons/icon-512x512.png","width":512,"height":512,"@type":"ImageObject"}},"image":{"@type":"ImageObject","url":"https://amp.dev/static/img/sharing/default-600x314.png","width":600,"height":314}}</script><style amp-custom>@font-face{font-family:system;font-style:normal;font-weight:300;src:local(".SFNSText-Light"),local(".HelveticaNeueDeskInterface-Light"),local(".LucidaGrandeUI"),local("Ubuntu Light"),local("Segoe UI Light"),local("Roboto-Light"),local("DroidSans"),local("Tahoma")}@font-face{font-family:system;font-style:italic;font-weight:300;src:local(".SFNSText-LightItalic"),local(".HelveticaNeueDeskInterface-Italic"),local(".LucidaGrandeUI"),local("Ubuntu Light Italic"),local("Segoe UI Light Italic"),local("Roboto-LightItalic"),local("DroidSans"),local("Tahoma")}@font-face{font-family:system;font-style:normal;font-weight:400;src:local(".SFNSText-Regular"),local(".HelveticaNeueDeskInterface-Regular"),local(".LucidaGrandeUI"),local("Ubuntu"),local("Segoe UI"),local("Roboto-Regular"),local("DroidSans"),local("Tahoma")}@font-face{font-family:system;font-style:italic;font-weight:400;src:local(".SFNSText-Italic"),local(".HelveticaNeueDeskInterface-Italic"),local(".LucidaGrandeUI"),local("Ubuntu Italic"),local("Segoe UI Italic"),local("Roboto-Italic"),local("DroidSans"),local("Tahoma")}@font-face{font-family:system;font-style:normal;font-weight:500;src:local(".SFNSText-Medium"),local(".HelveticaNeueDeskInterface-MediumP4"),local(".LucidaGrandeUI"),local("Ubuntu Medium"),local("Segoe UI Semibold"),local("Roboto-Medium"),local("DroidSans-Bold"),local("Tahoma Bold")}@font-face{font-family:system;font-style:italic;font-weight:500;src:local(".SFNSText-MediumItalic"),local(".HelveticaNeueDeskInterface-MediumItalicP4"),local(".LucidaGrandeUI"),local("Ubuntu Medium Italic"),local("Segoe UI Semibold Italic"),local("Roboto-MediumItalic"),local("DroidSans-Bold"),local("Tahoma Bold")}@font-face{font-family:system;font-style:normal;font-weight:700;src:local(".SFNSText-Bold"),local(".HelveticaNeueDeskInterface-Bold"),local(".LucidaGrandeUI"),local("Ubuntu Bold"),local("Roboto-Bold"),local("DroidSans-Bold"),local("Segoe UI Bold"),local("Tahoma Bold")}@font-face{font-family:system;font-style:italic;font-weight:700;src:local(".SFNSText-BoldItalic"),local(".HelveticaNeueDeskInterface-BoldItalic"),local(".LucidaGrandeUI"),local("Ubuntu Bold Italic"),local("Roboto-BoldItalic"),local("DroidSans-Bold"),local("Segoe UI Bold Italic"),local("Tahoma Bold")}@font-face{font-family:Noto Sans;font-style:normal;font-weight:400;font-display:optional;src:local("Noto Sans"),local("NotoSans"),url(https://amp.dev/static/fonts/noto-sans-v7-latin-regular.woff2) format("woff2"),url(https://amp.dev/static/fonts/noto-sans-v7-latin-regular.woff) format("woff")}@font-face{font-family:Noto Sans;font-style:normal;font-weight:700;font-display:optional;src:local("Noto Sans Bold"),local("NotoSans-Bold"),url(https://amp.dev/static/fonts/noto-sans-v7-latin-700.woff2) format("woff2"),url(https://amp.dev/static/fonts/noto-sans-v7-latin-700.woff) format("woff")}@font-face{font-family:Poppins;font-style:normal;font-weight:700;font-display:optional;src:local("Poppins Bold"),local("Poppins-Bold"),url(https://amp.dev/static/fonts/poppins-v5-latin-700.woff2) format("woff2"),url(https://amp.dev/static/fonts/poppins-v5-latin-700.woff) format("woff")}@font-face{font-family:Fira Mono;font-style:normal;font-weight:400;font-display:optional;src:local("Fira Mono"),local("FiraMono"),url(https://amp.dev/static/fonts/fira-mono-v7-latin-500.woff2) format("woff2"),url(https://amp.dev/static/fonts/fira-mono-v7-latin-500.woff) format("woff")}*{box-sizing:border-box}body,html{padding:0;margin:0;min-width:240px;color:#48525c;background-color:#fff;font-size:16px;font-family:Noto Sans,system;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;touch-action:manipulation}@media(max-width:240px){body,html{font-size:14px}}body>*>:not(.ap-o-code-preview)>*>.amp-carousel-button{width:3em;height:3em;border-radius:50%;box-shadow:0 10px 15px 0 rgba(0,0,0,.4);transition:.4s;background-color:#fff;position:relative;box-sizing:border-box;margin:1em;border-style:none;background-position:50% 50%;background-repeat:no-repeat;z-index:10;pointer-events:all}body>*>:not(.ap-o-code-preview)>*>.amp-carousel-button-prev{background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='%23005AF0'%3E%3Cpath d='M15 8.25H5.87l4.19-4.19L9 3 3 9l6 6 1.06-1.06-4.19-4.19H15v-1.5z'/%3E%3C/svg%3E")}body>*>:not(.ap-o-code-preview)>*>.amp-carousel-button-next{background-image:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='%23005AF0' %3E%3Cpath d='M9 3L7.94 4.06l4.19 4.19H3v1.5h9.13l-4.19 4.19L9 15l6-6z'/%3E%3C/svg%3E")}body>*>:not(.ap-o-code-preview)>*>.amp-carousel-button:hover{cursor:pointer;box-shadow:0 20px 30px 0 rgba(0,0,0,.2);background-color:#fff}:target:before{content:"";display:block;visibility:hidden;height:120px;margin-top:-120px}@media(min-width:1024px){h1:target:before{height:75px;margin-top:-75px}h2:target:before{height:81px;margin-top:-81px}h3:target:before{height:87px;margin-top:-87px}h4:target:before{height:90px;margin-top:-90px}h5:target:before{height:93px;margin-top:-93px}h6:target:before{height:97px;margin-top:-97px}}h1,h2,h3,h4,h5{margin-top:1.5rem;margin-bottom:.75em;font-family:Poppins,system;font-weight:700;line-height:1.2em;color:#20202a}h1{font-size:2.2rem;margin-top:3rem}section.-t h1:first-of-type{margin-top:0}@media(min-width:768px){section.-t h1:first-of-type{margin-bottom:2rem}}h2{font-size:1.8rem;margin-top:2rem}h3{font-size:1.414rem;margin-top:1.8rem}h4{font-size:1.2rem}h5{font-size:1rem}.-t .intro,.ap--section .intro{font-size:1rem;padding:0}.-t .intro *,.ap--section .intro *{font-size:inherit}.-t p,.ap--section p{line-height:1.6rem;font-weight:400;color:#48525c;display:block;margin-top:1.1em;margin-bottom:0;font-size:1rem}.-t p small,.ap--section p small{font-size:.875rem}.-t code,.ap--section code{display:inline;padding:2px 4px;font-family:Fira Mono,monospace;font-weight:500;word-break:normal;color:#000;background-color:#e2e5e6;font-size:.9em}.-t code,.-t p,.ap--section code,.ap--section p{overflow-wrap:break-word}.-t a,.ap--section a{position:relative;z-index:10}.-t a code,.ap--section a code{color:#005af0;z-index:-1}.-t pre,.ap--section pre{font-family:Fira Mono,monospace;font-weight:500;font-size:1rem;white-space:pre-wrap}.-t>ol,.-t>ul,.ap--section>ol,.ap--section>ul{line-height:1.6rem;font-weight:400;color:#48525c;display:block;padding-left:2em;margin:1.5em 0}.-t>ol ol,.-t>ol ul,.-t>ul ol,.-t>ul ul,.ap--section>ol ol,.ap--section>ol ul,.ap--section>ul ol,.ap--section>ul ul{padding-left:2em;margin:0}.-t>ol li,.-t>ul li,.ap--section>ol li,.ap--section>ul li{padding-left:.5em}.-t>ol li p,.-t>ul li p,.ap--section>ol li p,.ap--section>ul li p{font-size:1em}.-t figure figcaption,.ap--section figure figcaption{line-height:1.6rem;font-weight:400;color:#48525c;font-size:.8125rem;margin-top:.3em}.-t hr,.ap--section hr{height:1px;margin:.75em 0;background-color:#ebebf0;border:none}.-n{display:flex;align-items:center;text-decoration:none;padding:0 0 1.5em;margin:0}.-r{line-height:1.6rem;font-weight:400;color:#48525c;font-size:.875rem;font-weight:700;color:#005af0;line-height:1.3;transition:transform .3s ease}.-i{fill:#005af0;padding:.438em 0;margin-bottom:auto;margin-right:.625em;box-sizing:initial;transition:transform .3s ease}.-n:hover .-i,.-n:hover .-r{transform:translateX(10px)}.-s{border-bottom:1px solid #ebebf0}.-s .-r{font-size:1rem;font-family:Poppins,system;font-weight:700;color:#000;padding-left:10px}.-s .-i{width:1.375em;height:1.375em;fill:#fff;background-color:#005af0;overflow:hidden;padding:.563em}.-s .-i,.-s:hover .-i{box-shadow:0 10px 20px 0 rgba(0,0,0,.25)}.-s:hover .-i svg{animation:duepduep .3s ease}a{font-weight:700;text-decoration:none;color:#005af0}a code{display:inline;padding:2px 4px;font-family:Fira Mono,monospace;font-weight:500;word-break:normal;color:#000;background-color:#e2e5e6;font-size:.9em;color:#005af0}.ap-a-ico{display:flex;font-size:medium;box-sizing:initial;justify-content:center;width:1em;height:1em}.ap-a-btn{font-family:Poppins,system;font-weight:700;line-height:1.2em;color:#20202a;font-size:1em;color:#fff;display:inline-block;max-width:100%;width:auto;height:auto;padding:.75em 1.75em;margin:0;text-decoration:none;text-align:center;border-radius:3px;background-color:#005af0;border:none;cursor:pointer;box-shadow:0 15px 35px -5px rgba(0,0,0,.25);transition:transform .3s ease,box-shadow .3s ease}.ap-a-btn:hover{transform:translateY(-.125em);box-shadow:0 25px 20px -15px rgba(0,0,0,.15)}@media(min-width:768px){.ap-a-btn{padding:1em 2em}}.-o{right:20px;left:auto;bottom:20px;width:calc(100% - 40px);padding:15px;line-height:1.6rem;font-weight:400;color:#48525c;font-size:.875rem;background-color:#fff;box-shadow:0 15px 30px 0 rgba(0,0,0,.15);border-radius:8px}@media(min-width:768px){.-o{max-width:500px}}.-u{position:absolute;right:15px;top:15px;-webkit-appearance:none;background-color:transparent;border:none;padding:0}.-u svg{width:10px;height:10px}.-o button{cursor:pointer}.ap--footer{position:relative;z-index:15;padding:3em 0 2em;line-height:1.6rem;font-weight:400;color:#48525c;font-size:1rem;color:#fff;background:linear-gradient(45deg,#48525c,#20202a)}.-a{width:100%;max-width:1440px;padding:0 20px;margin:0 auto}.-f{padding-bottom:4em}@media(min-width:768px){.-f{display:flex;align-items:center}}.-l{display:flex;flex-direction:column;margin-left:auto}@media(min-width:1024px){.-l{flex-direction:row}}.-c{margin:3em 2em 1em 0;color:#fff}@media(min-width:768px){.-c{margin:auto 2em auto 1em}}.-h{display:flex;list-style:none;padding:0;margin:0}.-p{flex:1 0 auto}@media(min-width:768px){.-p{margin:16px}}.-d{width:2.5em;height:2.5em;fill:#fff}@media(max-width:240px){.-d{font-size:14px}}@media(min-width:768px){.-v{display:grid;grid-gap:30px;grid-template-columns:repeat(12,1fr)}}.-m{flex:1 1 100%}.-m:nth-child(odd){grid-column:span 3}@media(max-width:1023px){.-m:nth-child(odd){grid-column:span 6}}.-m:nth-child(2n+2){grid-column:span 3}@media(max-width:1023px){.-m:nth-child(2n+2){grid-column:span 6}}.-g{color:#fff}.-y{list-style:none;padding:0}@media(min-width:768px){.-y+.-g{margin-top:2.5em}}.-b{position:relative}.-w{padding-left:35px;font-size:.8125rem;color:#fff}.-x{position:absolute;left:10px;top:8px;width:12px;height:12px;fill:#fff}.-k{display:flex;flex-direction:column;padding-top:4em}@media(min-width:768px){.-k{flex-direction:row;align-items:flex-end}}.-_{width:50%;max-width:200px;margin-bottom:40px;margin-right:auto}@media(min-width:768px){.-_{margin-bottom:0}}.-j{list-style:none;padding:0;margin:0}.-q{display:inline-block;margin-right:1em}.-z{font-size:.8125rem;font-weight:400;color:#fff}.-te{display:block;font-size:.875rem;margin-top:2em;color:#e2e5e6}.-te a{color:#fafafc}.ap-breadcrumbs,.-ou{display:flex;align-items:center;font-family:Poppins,system;font-weight:700;font-size:.8125rem}.ap-breadcrumbs-angle,.-oa{width:10px;height:10px;margin:0 6px;transform:rotate(-90deg)}.ap-m-overview-title{max-width:870px;margin-top:1.5em}@media(min-width:600px){.ap-m-overview-title{margin-top:3em}}.ap-m-overview-title h1{margin-top:0}.ap-o-burger-menu{display:none;position:fixed;top:0;left:0;width:100vw;height:100vh;padding:110px 20px 80px;z-index:16;background-color:#fff}@media(max-width:240px){.ap-o-burger-menu{padding:37px 20px 0}.has-banner~.ap-o-burger-menu{padding:calc(37px + 31px) 0 0 20px}}.ap-o-burger-menu-label{position:fixed;z-index:1001;top:12px;right:20px;cursor:pointer}.ap-o-burger-menu-label.mainmenuopen{z-index:1004}.has-banner+.ap-o-burger-menu-label{top:calc(12px + 31px)}.amp-hidden+.has-banner+.ap-o-burger-menu-label,amp-user-notification[hidden]+.has-banner+.ap-o-burger-menu-label{top:12px}@media(min-width:768px){.ap-o-burger-menu-label{right:30px}}@media(min-width:1024px){.ap-o-burger-menu-label{display:none}}.ap-o-burger-menu-icon{width:30px;height:30px}@media(min-width:1024px){.ap-o-burger-menu{display:none}}.ap-o-burger-menu.mainmenuopen{display:block;z-index:1003}.ap-o-burger-menu.mainmenuopen~.ap--main{max-height:calc(100vh - 55px)}.has-banner+.ap-o-burger-menu.mainmenuopen~.ap--main{max-height:calc(100vh - 55px - 31px)}.ap-o-burger-menu.mainmenuopen~.ap--footer{display:none}.-th{list-style:none;display:flex;flex-direction:column;height:100%;margin:1rem 0 0;padding:0;overflow-y:auto;-webkit-overflow-scrolling:touch}@media(max-width:240px){.-th{padding:1rem 0}}.-th .-th{margin-top:1rem}.-th .-th .-tp:last-child{margin-bottom:0}.-tp{margin-bottom:1rem;position:relative}.-tp:last-child{margin-top:auto}.-tp ul{display:none}.-td{position:absolute;left:0;top:0;width:100%;height:36px;padding:0;margin:0;background:none transparent;border:none;cursor:pointer;-webkit-appearance:none}.-td:focus{outline:5px auto -webkit-focus-ring-color}.-td:checked~ul{display:block}.-td:checked+.nav-icon .ap-a-ico{transform:rotate(0)}.-td+.nav-icon .ap-a-ico{display:inline-block;transform:rotate(-90deg)}.-tp .ap-a-ico{height:.6em;margin-bottom:.3em;margin-left:.3em;width:.6em}.-tv{position:relative;margin-right:20px;padding-bottom:10px;display:none}@media(max-width:240px){.-tv{margin-right:0}}@media(min-width:1024px){.-tv{margin-right:0;padding-right:30px;display:block}}.-tm{display:flex;align-items:center;font-size:11px;border:none;background:0 0}.-tm:hover{color:#005af0}.-tg{position:absolute;left:0;top:0;width:100%;height:100%;margin:0;padding:0;border:0;-webkit-appearance:none}@media(min-width:1024px){.-tg{width:calc(100% - 30px)}}.-ty{width:10px;height:10px;margin-left:5px}.-tb{list-style:none;display:none;position:absolute;right:15%;margin:0;padding:2px 8px;background:#fff;box-shadow:0 2px 10px 0 rgba(0,0,0,.07)}@media(max-width:240px){.-tb{overflow:auto;max-height:calc(100vh - 55px - 31px)}}.-tb:hover,.-tg:checked~.-tb,.-tg:hover~.-tb,.-tv .-tw{display:block}.-tb:focus-within{display:block}.mainmenuopen .-tv{display:block}.-tw{font-family:Poppins,system;font-weight:700;font-size:1.5em;color:#000}@media(min-width:1024px){.-tw{font-size:1rem}}.-tx{line-height:1.6rem;font-weight:400;color:#48525c;font-size:1rem}@media(min-width:1024px){.-tx{font-size:.875rem}}.-tx.active{text-decoration:underline}.-tw:hover{color:#005af0}.-tw.active{font-weight:700;color:#005af0}.ap--header{width:100%;max-width:2020px;margin:0 auto;position:-webkit-sticky;position:sticky;top:0;z-index:1001;background-color:#fff;box-shadow:0 2px 10px 0 rgba(0,0,0,.07)}.ap--header.mainmenuopen{z-index:1004}.ap--header.mainmenuopen~.ap--main{max-width:100vw;overflow-x:hidden}@media(min-width:1024px){.ap--header{top:0}.ap--header.has-banner{top:-31px}}.ap-o-header{display:flex;flex-direction:row;flex-wrap:nowrap;align-items:center;max-width:1460px;padding:10px 0 0 20px;margin:0 auto}@media(min-width:1024px){.ap-o-header{display:flex;padding-left:30px}}.ap-o-header-home{position:-webkit-sticky;position:sticky;top:10px;display:flex;align-items:center;margin-right:auto;padding-bottom:10px;overflow:hidden}.ap-o-header-home-logo{height:30px;margin-right:6px;width:30px}.ap-o-header-home-sub-title,.ap-o-header-home-title{margin-left:4px;font-family:Poppins,system;font-weight:700;font-size:1.5em;color:#005af0}@media(min-width:1024px){.ap-o-header-home-sub-title,.ap-o-header-home-title{font-size:1.125rem}}.ap-o-header-home-sub-title{color:#000;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.ap-o-header-main{display:none;flex:1 1 auto;padding:0 30px}@media(min-width:1024px){.ap-o-header-main{display:flex}}.ap-o-header-main-item{position:relative;display:flex;align-items:center;margin:0 18px -5px}.ap-o-header-main-link{display:flex;align-items:center;padding:0 0 14px;border:0;background:0 0}.ap-o-header-main-link-icon{font-size:8px;margin-left:5px;transform:rotate(0);transition:transform .2s ease}.ap-o-header-flyout:hover,.ap-o-header-main-link:focus~.ap-o-header-flyout,.ap-o-header-main-link:hover~.ap-o-header-flyout{opacity:1;pointer-events:all;transition:opacity .2s ease}.ap-o-header-flyout:focus-within{opacity:1;pointer-events:all;transition:opacity .2s ease}.ap-o-header-flyout{box-shadow:0 10px 25px 0 rgba(0,0,0,.2);position:absolute;top:95%;left:0;margin:0;padding:0 0 10px;pointer-events:none;opacity:0;list-style:none;background:#fff;border-radius:0 0 4px 4px;transition:opacity .2s ease}.ap-o-header-flyout:before{content:"";display:block;background:linear-gradient(180deg,rgba(0,0,0,.07) 0,hsla(0,0%,100%,.07));height:8px;margin-bottom:10px}.ap-o-header-flyout-item-secondary{margin:20px 0;white-space:nowrap;min-width:200px}.ap-o-header-flyout-item-secondary a:hover{color:#005af0}.ap-o-header-flyout-item-title{line-height:1.6rem;font-weight:400;color:#48525c;font-size:.875rem;font-family:Poppins,system;font-weight:700;color:#000;line-height:1.4em}.ap-o-header-flyout-item-title.secondary{padding:0 15px}.ap-o-header-flyout-item-description{line-height:1.6rem;font-weight:400;color:#48525c;font-size:.8125rem;opacity:.75;line-height:1.25em}.ap-o-header-flyout-primary-item{position:relative;width:300px}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link{box-shadow:0 10px 25px 0 rgba(0,0,0,.2);background-color:#005af0}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link-info>*{color:#fff}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link-info-stories .ap-o-header-flyout-item-description,.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link-info-stories .ap-o-header-flyout-item-title{color:#20202a}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link-info-email .ap-o-header-flyout-item-description,.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link-info-email .ap-o-header-flyout-item-title{color:#20202a}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link-icon{fill:#fff}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link-icon.email,.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link-icon.stories{fill:#20202a}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link.websites{background:linear-gradient(225deg,#00dcc0,#005af0 75%)}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link.stories{background:linear-gradient(225deg,#ec6600,#ffdc00 75%)}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link.ads{background:linear-gradient(225deg,#eb49e1,#5500d7 75%)}.ap-o-header-flyout-primary-item:hover .ap-o-header-flyout-primary-item-link.email{background:linear-gradient(225deg,#09a600,#e1eb64 75%)}.ap-o-header-flyout-primary-item-link{display:flex;align-items:center;border-radius:4px;padding:10px;margin:0 5px}.ap-o-header-flyout-primary-item-link-info{margin:0 20px 0 15px}.ap-o-header-flyout-primary-item-link-icon{display:flex;font-size:medium;box-sizing:initial;justify-content:center;width:2em;height:2em}.ap-o-header-flyout-primary-item-link-icon.websites{fill:url(#gradient-websites) #000}.ap-o-header-flyout-primary-item-link-icon.stories{fill:url(#gradient-stories) #000}.ap-o-header-flyout-primary-item-link-icon.ads{fill:url(#gradient-ads) #000}.ap-o-header-flyout-primary-item-link-icon.email{fill:url(#gradient-email) #000}#blm-banner{background:#111;color:#eee;display:block;text-align:center;padding:.5em}.ap--main>.-tf:first-child{padding-top:54px;padding-bottom:3rem}.-ar{background-color:#fafafc}.-ar .-tf{position:relative;display:flex;flex-wrap:wrap;width:100%;max-width:1440px;padding:0 20px;margin-left:auto;margin-right:auto}@media(max-width:767px){.-ar .-tf{padding:0 15px}.-ar .-tf>div,.-ar .-tf section{min-width:0}}@media(min-width:768px){.-ar .-tf{display:grid;grid-gap:30px;grid-template-columns:repeat(24,minmax(0,1fr));padding:0 30px}}.-ar .-t{display:grid;grid-column:1/25;grid-template-columns:repeat(24,minmax(0,1fr));width:100%;background-color:#fff;padding-bottom:4em;box-shadow:0 25px 40px 0 rgba(0,0,0,.05)}.-ar .ap--section{grid-column:2/23}@media(min-width:600px){.-ar .ap--section{grid-column:3/23}}.-ar .ap--section-fullscreen{grid-column:1/25}</style><link rel="manifest" href="/manifest.json"></head><body class="ap--websites"> <svg style="position: absolute; width: 0; height: 0; overflow: hidden;" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"> <defs> <symbol id="close" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <path d="M39.503 32l22.963-22.963c2.046-2.046 2.046-5.457 0-7.503s-5.456-2.046-7.503 0l-22.963 22.963-22.963-22.963c-2.046-2.046-5.457-2.046-7.503 0s-2.046 5.457 0 7.503l22.963 22.963-22.963 22.963c-2.046 2.046-2.046 5.456 0 7.503s5.457 2.046 7.503 0l22.963-22.963 22.963 22.963c2.046 2.046 5.456 2.046 7.503 0s2.046-5.456 0-7.503l-22.963-22.963z"/> </symbol><symbol id="stackoverflow" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 19 25"><path d="M14.2 14.7h1.6V25H0V14.7h1.6v8.6h12.5c.1-2.8.1-5.7.1-8.6zM9.5 3.2c1.8 2.7 3.6 5.4 5.4 8.2.6-.4 1.1-.8 1.7-1.2C14.8 7.5 13 4.8 11.2 2c-.5.5-1.1.8-1.7 1.2zm5.1 8.5c-2.8-1.7-5.5-3.3-8.2-5-.4.6-.7 1.2-1.1 1.8 2.7 1.7 5.5 3.3 8.2 5 .4-.6.8-1.2 1.1-1.8zM17.4 0c-.7.1-1.3.2-2 .4.5 3.2 1.1 6.5 1.6 9.7.7-.1 1.3-.2 2-.4-.5-3.2-1.1-6.5-1.6-9.7zm-4 14.1c-3.1-.9-6.2-1.7-9.2-2.6-.2.7-.4 1.4-.5 2 3.1.9 6.2 1.7 9.2 2.6.1-.6.3-1.3.5-2zm-.9 5.5H3v2.1h9.5v-2.1zm.3-2.7c-3.2-.3-6.3-.6-9.5-.9-.1.7-.1 1.4-.2 2.1 3.2.3 6.3.6 9.5.9 0-.8.1-1.4.2-2.1z"/></symbol><symbol id="github" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <path d="M32 0.792c-17.68 0-32 14.328-32 32 0 14.141 9.168 26.133 21.88 30.36 1.6 0.301 2.187-0.688 2.187-1.539 0-0.76-0.027-2.773-0.040-5.44-8.901 1.931-10.779-4.293-10.779-4.293-1.456-3.693-3.56-4.68-3.56-4.68-2.899-1.984 0.224-1.944 0.224-1.944 3.213 0.224 4.901 3.296 4.901 3.296 2.853 4.893 7.491 3.48 9.32 2.661 0.288-2.069 1.112-3.48 2.027-4.28-7.107-0.8-14.576-3.552-14.576-15.813 0-3.493 1.24-6.347 3.293-8.587-0.36-0.808-1.44-4.061 0.28-8.469 0 0 2.68-0.859 8.8 3.28 2.56-0.712 5.28-1.064 8-1.080 2.72 0.016 5.44 0.368 8 1.080 6.080-4.139 8.76-3.28 8.76-3.28 1.72 4.408 0.64 7.661 0.32 8.469 2.040 2.24 3.28 5.093 3.28 8.587 0 12.293-7.48 15-14.6 15.787 1.12 0.96 2.16 2.923 2.16 5.92 0 4.283-0.040 7.723-0.040 8.763 0 0.84 0.56 1.84 2.2 1.52 12.803-4.197 21.963-16.197 21.963-30.317 0-17.672-14.328-32-32-32z"/> </symbol><symbol id="wordpress" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M57.251 18.2A28.688 28.688 0 0 1 60.766 32c0 10.611-5.749 19.883-14.301 24.867l8.787-25.405c1.64-4.107 2.187-7.389 2.187-10.304 0-1.08-.069-2.08-.187-2.96zm-21.283.277c1.725-.08 3.285-.28 3.285-.28 1.552-.2 1.371-2.48-.179-2.397 0 0-4.68.36-7.68.36-2.837 0-7.6-.4-7.6-.4-1.56-.08-1.763 2.28-.2 2.36 0 0 1.44.163 3 .24l4.48 12.28-6.32 18.88L14.277 18.4c1.731-.08 3.291-.267 3.291-.267 1.56-.2 1.376-2.48-.173-2.389 0 0-4.656.368-7.664.368-.533 0-1.168-.021-1.84-.04C13.096 8.4 21.96 3.24 32 3.24a28.642 28.642 0 0 1 19.429 7.555c-.123-.008-.243-.024-.376-.024-2.827 0-4.832 2.461-4.832 5.104 0 2.373 1.368 4.381 2.827 6.749 1.096 1.92 2.373 4.381 2.373 7.939 0 2.44-.944 5.317-2.189 9.277l-2.867 9.56-10.4-30.96.003.037zM32 60.757c-2.824 0-5.549-.408-8.128-1.165l8.632-25.083 8.84 24.232c.064.141.133.269.208.397A28.794 28.794 0 0 1 32 60.762zM3.229 32c0-4.171.896-8.133 2.493-11.707L19.439 57.89C9.85 53.226 3.231 43.389 3.228 31.999zM32 0C14.36 0 0 14.36 0 32s14.36 32 32 32 32-14.36 32-32S49.64 0 32 0z"/></symbol><symbol id="youtube" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M62.664 16.542c-.773-2.708-2.862-4.797-5.514-5.556l-.057-.014c-4.989-1.336-25.065-1.336-25.065-1.336s-20.026-.027-25.065 1.337c-2.708.773-4.797 2.862-5.556 5.514l-.014.057C.507 21.107 0 26.354 0 31.72l.001.327v-.017.252a83.84 83.84 0 0 0 1.475 15.695l-.083-.521c.773 2.708 2.862 4.797 5.513 5.556l.057.014c4.983 1.339 25.065 1.339 25.065 1.339s20.023 0 25.065-1.339c2.708-.773 4.797-2.862 5.556-5.514l.014-.057c.85-4.469 1.336-9.609 1.336-14.863l-.002-.595v.03c.002-.184.002-.403.002-.621 0-5.255-.486-10.396-1.416-15.38l.08.515zM25.621 41.608V22.42l16.71 9.609z"/></symbol><symbol id="twitter" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <path d="M63.875 12.186c-2.36 1.037-4.88 1.744-7.533 2.067 2.704-1.629 4.784-4.197 5.768-7.261-2.536 1.48-5.346 2.557-8.338 3.157-2.389-2.557-5.794-4.157-9.576-4.157-7.245 0-13.119 5.874-13.119 13.111 0 1.040 0.12 2.040 0.339 2.997-10.906-0.515-20.572-5.752-27.042-13.669-1.139 1.925-1.776 4.162-1.776 6.6 0 4.56 2.32 8.568 5.834 10.922-2.152-0.069-4.176-0.661-5.941-1.643v0.163c0 6.36 4.514 11.663 10.522 12.871-1.101 0.296-2.264 0.456-3.456 0.456-0.837 0-1.64-0.080-2.443-0.229 1.683 5.208 6.52 9.005 12.277 9.112-4.48 3.517-10.157 5.613-16.271 5.613-1.040 0-2.077-0.061-3.12-0.179 5.837 3.717 12.714 5.89 20.151 5.89 24.143 0 37.329-19.989 37.329-37.294 0-0.557 0-1.12-0.040-1.68 2.563-1.837 4.8-4.16 6.56-6.794l-0.125-0.053z"/> </symbol><symbol id="download" viewBox="0 0 64 64"> <path d="M8.8 62.32c0-0.88 0.72-1.68 1.68-1.68 10.8 0 32.32 0 43.040 0 0.88 0 1.68 0.72 1.68 1.68 0 0.88-0.72 1.68-1.68 1.68-10.8 0-32.32 0-43.040 0-0.96 0-1.68-0.72-1.68-1.68z"/> <path d="M49.44 34.56c0.72-0.72 0.72-1.84 0-2.56s-1.84-0.72-2.56 0l-13.040 13.040v-43.28c0-0.96-0.88-1.76-1.84-1.76-1.040 0-1.84 0.8-1.84 1.76v43.28l-13.040-13.12c-0.72-0.72-1.84-0.72-2.56 0s-0.72 1.84 0 2.56l16.24 16.24c0.72 0.72 1.84 0.72 2.56 0l16.080-16.16z"/> </symbol><symbol id="internal" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M43.16 10.18c-0.881-0.881-2.322-0.881-3.203 0s-0.881 2.322 0 3.203l16.335 16.335h-54.051c-1.281 0-2.242 1.041-2.242 2.242 0 1.281 0.961 2.322 2.242 2.322h54.051l-16.415 16.335c-0.881 0.881-0.881 2.322 0 3.203s2.322 0.881 3.203 0l20.259-20.259c0.881-0.881 0.881-2.322 0-3.203l-20.179-20.179z"/></symbol><symbol id="menu" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <path d="M2.133 13.867h59.733c1.178 0 2.133 0.955 2.133 2.133v2.133c0 1.178-0.955 2.133-2.133 2.133h-59.733c-1.178 0-2.133-0.955-2.133-2.133v-2.133c0-1.178 0.955-2.133 2.133-2.133z"/> <path d="M2.133 28.8h59.733c1.178 0 2.133 0.955 2.133 2.133v2.133c0 1.178-0.955 2.133-2.133 2.133h-59.733c-1.178 0-2.133-0.955-2.133-2.133v-2.133c0-1.178 0.955-2.133 2.133-2.133z"/> <path d="M2.133 43.733h59.733c1.178 0 2.133 0.955 2.133 2.133v2.133c0 1.178-0.955 2.133-2.133 2.133h-59.733c-1.178 0-2.133-0.955-2.133-2.133v-2.133c0-1.178 0.955-2.133 2.133-2.133z"/> </symbol><symbol id="wrench" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <path d="M64 18.267c0 1.608-0.214 3.21-0.636 4.767l0.008 0.169c0.028 0.598-0.186 1.18-0.592 1.619-2.713 7.035-9.527 11.712-17.107 11.712-1.852 0-3.671-0.275-5.427-0.819l-25.943 25.854c-1.573 1.567-3.667 2.431-5.889 2.431s-4.318-0.864-5.89-2.431l-0.087-0.087c-3.25-3.238-3.25-8.508 0-11.747l23.75-23.669c0.66-0.657 1.046-1.529 1.090-2.456l0.173-3.404c-0.070-0.657-0.105-1.308-0.105-1.939 0-10.074 8.221-18.267 18.327-18.267 3.298 0 6.532 0.883 9.353 2.555 0.602 0.357 1.005 0.979 1.083 1.675 0.011 0.098 0.017 0.161 0.020 0.237 0.044 1.158-0.297 1.536-9.858 10.586l3.847 3.921c1.149-1.058 3.185-2.929 8.997-8.27 0.542-0.497 1.293-0.697 2.010-0.534 0.719 0.163 1.311 0.668 1.583 1.351 0.856 2.147 1.291 4.418 1.292 6.745zM59.819 22.4c0.395-1.346 0.595-2.737 0.594-4.132 0-1.194-0.141-2.367-0.422-3.507-2.922 2.685-8.959 8.231-9.040 8.307-0.536 0.494-1.37 0.474-1.88-0.046l-6.953-7.087c-0.252-0.258-0.39-0.605-0.384-0.965s0.158-0.702 0.42-0.95c2.985-2.825 7.47-7.107 9.54-9.166-1.884-0.84-3.936-1.278-6.022-1.278-8.129 0-14.742 6.59-14.742 14.691 0 0.533 0.032 1.090 0.096 1.654 0.007 0.071 0.010 0.142 0.007 0.214l-0.174 3.646c-0.087 1.818-0.847 3.528-2.138 4.816l-23.75 23.668c-1.85 1.844-1.85 4.844 0 6.688l0.087 0.087c0.897 0.893 2.088 1.385 3.356 1.385s2.46-0.492 3.355-1.385l26.429-26.338c0.2-0.199 0.419-0.39 0.693-0.601 0.377-0.292 0.882-0.363 1.326-0.187 1.743 0.692 3.578 1.044 5.456 1.044 6.243 0 11.831-3.943 13.905-9.811 0.044-0.126 0.107-0.244 0.187-0.351-0.002-0.134 0.016-0.268 0.054-0.396z"/> </symbol><symbol id="template" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><path d="M1.44 0h62.56v64h-64v-64h1.44zM20.64 60.88v-39.52h-17.76v39.6h17.76zM23.44 21.36v39.6h37.44v-39.6h-37.44zM2.88 18.24h58.080v-15.36h-58.080v15.36z"/></symbol><symbol id="learn" viewBox="0 0 64 64"> <path d="M57.674 35.257c0 1.779 1.416 3.221 3.163 3.221s3.163-1.442 3.163-3.221c0-1.155-0.602-2.16-1.498-2.728v-8.973c0-0.682-0.401-1.297-1.018-1.563l-29.585-12.716c-0.413-0.178-0.881-0.178-1.295 0l-29.586 12.716c-0.617 0.265-1.018 0.881-1.018 1.563s0.401 1.297 1.018 1.562l6.662 2.863v17.587c0 4.624 7.288 9.29 23.571 9.29s23.571-4.666 23.571-9.29v-17.587l4.349-1.869v6.417c-0.896 0.569-1.497 1.573-1.497 2.728zM51.491 45.567c0 1.575-4.797 5.898-20.24 5.898s-20.24-4.323-20.24-5.898v-16.155l19.593 8.421c0.207 0.089 0.427 0.134 0.647 0.134s0.441-0.045 0.647-0.134l19.593-8.421v16.155zM31.251 34.43l-25.303-10.875 25.303-10.875 25.302 10.875-25.302 10.875z"/> </symbol><symbol id="examples-flyout" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 26 20"><g><path d="M20 19.3a.9.9 0 1 1 0-1.7 1.9 1.9 0 0 0 1.9-1.9v-3a3.6 3.6 0 0 1 1.3-2.7 3.6 3.6 0 0 1-1.3-2.8v-3A1.9 1.9 0 0 0 20 2.3a.9.9 0 1 1 0-1.7 3.6 3.6 0 0 1 3.6 3.6v3a1.9 1.9 0 0 0 2 2v1.6a1.9 1.9 0 0 0-2 2v3a3.6 3.6 0 0 1-3.6 3.5zm-14 0a3.6 3.6 0 0 1-3.6-3.6v-3a1.9 1.9 0 0 0-2-1.9V9.1a1.9 1.9 0 0 0 2-1.9v-3A3.6 3.6 0 0 1 6 .6a.9.9 0 1 1 0 1.8A1.9 1.9 0 0 0 4 4.2v3A3.6 3.6 0 0 1 2.8 10a3.6 3.6 0 0 1 1.3 2.7v3A1.9 1.9 0 0 0 6 17.6a.9.9 0 1 1 0 1.7z"/><g transform="translate(5.8 8.5)"><circle cx="12.3" cy="1.4" r="1.4"/><circle cx="7.3" cy="1.4" r="1.4"/><circle cx="2.2" cy="1.4" r="1.4"/></g></g></symbol><symbol id="components-flyout" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 28 22"><path d="M8.7 17l-2.5-2.2-4-3.5-.9-.8v1l2.5-2.2 4-3.5 1-.8c.2-.3.2-.8 0-1a.8.8 0 0 0-1.2 0L5.1 6l-4 3.6-.8.8c-.3.2-.3.8 0 1l2.5 2.2 4 3.6.8.8c.3.2.8.3 1.1 0 .3-.3.3-.8 0-1.1zM19.3 5l2.5 2.2 4 3.5.9.8v-1l-2.5 2.2-4 3.5-.9.8c-.3.3-.3.8 0 1 .3.4.8.3 1 0L23 16l4-3.6.9-.8c.3-.2.3-.8 0-1l-2.5-2.3-4-3.5-1-.8c-.2-.3-.7-.3-1 0-.3.3-.3.8 0 1zm-8 16.4l.7-2 1.6-5a3563.7 3563.7 0 0 1 2-5.8l1.7-5.1.8-2.5c.2-.4-.1-.9-.5-1a.8.8 0 0 0-1 .6c-.1.7-.4 1.3-.6 2l-1.6 4.9-2 5.9-1.7 5-.8 2.6c-.2.4.1.8.5 1a.8.8 0 0 0 1-.6z"/></symbol><symbol id="guides-documents" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 31 32"><path d="M6.7 28H1.2c-.4 0-.6-.4-.6-.8L.5.7c0-.4.3-.7.7-.7h21.1c.5 0 .7.3.7.7V2c0 .5-.2.7-.7.7-.4 0-.6-.2-.6-.7v-.6H1.8L2 26.6h4.8c.4 0 .7.2.7.6 0 .4-.3.7-.7.7z"/><path d="M8 6.8H6c-.4 0-.7-.3-.7-.7 0-.4.3-.7.7-.7h2c.5 0 .7.3.7.7 0 .4-.2.7-.7.7zM8 10.9H6c-.4 0-.7-.3-.7-.7 0-.4.3-.7.7-.7h2c.5 0 .7.3.7.7 0 .4-.2.7-.7.7zM8 15H6c-.4 0-.7-.3-.7-.7 0-.4.3-.7.7-.7h2c.5 0 .7.3.7.7 0 .4-.2.7-.7.7zM8 19H6c-.4 0-.7-.2-.7-.6 0-.4.3-.7.7-.7h2c.5 0 .7.3.7.7 0 .4-.2.7-.7.7z"/><path d="M29.8 4H8.7c-.5 0-.7.4-.7.8v26.5c0 .4.3.7.7.7h21.1c.4 0 .7-.3.7-.7V4.8c0-.4-.3-.7-.7-.7zm-.6 26.6H9.4V5.4h19.8v25.2z"/><path d="M18.1 22.8h-.6l.6-3.8h-1.9c-.2 0-.3-.1-.3-.3v-.2l3.4-5.8h.7l-.7 3.8h2c.2 0 .3.1.3.3v.2L18 22.8z"/></symbol><symbol id="start" viewBox="0 0 64 64"> <path d="M63.195 1.874c-0.143-0.52-0.549-0.926-1.069-1.069-10.765-2.978-20.385 2.978-24.355 6.948l-11.452 11.452-5.421-1.756c-3.551-1.163-7.454-0.217-10.078 2.443l-3.359 3.359c-0.582 0.594-0.582 1.544 0 2.138l7.329 7.329-4.199 6.948c-0.343 0.593-0.25 1.342 0.229 1.832l11.681 11.605c0.471 0.504 1.223 0.63 1.832 0.305l6.948-4.123h0.076l7.329 7.329c0.594 0.582 1.544 0.582 2.138 0l3.359-3.359c2.66-2.624 3.606-6.527 2.443-10.078l-1.756-5.421 11.452-11.452c3.894-4.047 9.849-13.666 6.871-24.431zM23.799 50.126l-9.925-9.925 3.13-5.268 12.063 12.063-5.268 3.13zM54.109 24.015l-12.139 12.139c-0.4 0.399-0.547 0.987-0.382 1.527l2.061 6.337c0.783 2.448 0.136 5.128-1.68 6.948l-2.29 2.29-29.012-29.012 2.29-2.29c1.819-1.815 4.5-2.463 6.948-1.68l6.337 2.061c0.54 0.165 1.128 0.018 1.527-0.382l12.216-12.063c3.436-3.359 11.452-8.398 20.461-6.337 2.061 9.085-2.978 17.102-6.337 20.461z"/> <path d="M10.667 51.195l-9.009 9.009c-0.478 0.358-0.703 0.963-0.576 1.547s0.583 1.040 1.167 1.167c0.584 0.127 1.188-0.098 1.547-0.576l9.009-9.009c0.456-0.608 0.396-1.459-0.142-1.996s-1.388-0.598-1.996-0.142z"/> <path d="M11.66 63.563c0.594 0.582 1.544 0.582 2.138 0l4.581-4.581c0.456-0.608 0.395-1.459-0.142-1.996s-1.388-0.598-1.996-0.142l-4.581 4.581c-0.582 0.594-0.582 1.544 0 2.138z"/> <path d="M1.505 52.798c0.403-0.006 0.787-0.17 1.069-0.458l4.581-4.581c0.478-0.358 0.703-0.963 0.576-1.547s-0.583-1.040-1.167-1.167c-0.584-0.127-1.188 0.098-1.547 0.576l-4.581 4.581c-0.428 0.436-0.554 1.086-0.322 1.65s0.78 0.937 1.391 0.945z"/> <path d="M43.726 13.021c-2.003 2.003-2.003 5.25 0 7.253s5.25 2.003 7.253 0c2.003-2.003 2.003-5.25 0-7.253s-5.25-2.003-7.253 0zM48.841 18.136c-0.699 0.692-1.79 0.794-2.605 0.243s-1.127-1.601-0.745-2.508c0.382-0.907 1.351-1.417 2.315-1.219s1.653 1.050 1.646 2.033c-0.004 0.545-0.223 1.067-0.611 1.451z"/> </symbol><symbol id="amp-email" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <defs> <linearGradient id="gradient-email" x1="76.2776137%" x2="20.8316146%" y1="-25.8400575%" y2="121.578822%"> <stop offset="0%" stop-color="#F1F068"/> <stop offset="46.2139774%" stop-color="#96D64F"/> <stop offset="100%" stop-color="#2DB932"/> </linearGradient> </defs> <path d="M64 14.080c0-3.291-2.56-5.851-5.851-5.851h-52.297c-3.291 0-5.851 2.56-5.851 5.851v35.84c0 3.291 2.56 5.851 5.851 5.851h52.297c3.291 0 5.851-2.56 5.851-5.851v-35.84zM5.851 11.154h52.297c0.183 0 0.366 0 0.549 0l-24.503 25.417c-0.549 0.549-1.28 0.914-2.194 0.914-0.731 0-1.646-0.366-2.194-0.914l-24.32-25.417c0 0 0.183 0 0.366 0zM2.926 14.080c0-0.366 0-0.731 0.183-1.097l15.36 16.091-15.543 19.2v-34.194zM58.149 52.846h-52.297c-0.731 0-1.646-0.366-2.194-0.914l16.823-20.663 7.131 7.497c1.097 1.097 2.56 1.829 4.206 1.829s3.109-0.731 4.206-1.829l6.583-6.949 17.371 20.114c-0.366 0.549-1.097 0.914-1.829 0.914v0zM61.074 48.274l-16.091-18.834 15.909-16.64c0.183 0.366 0.183 0.731 0.183 1.097v34.377z"/> </symbol><symbol id="amp-ads" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <defs> <linearGradient id="gradient-ads" x1="100%" x2="14.5415777%" y1="0%" y2="123.368881%"> <stop offset="0%" stop-color="#FF52E1"/> <stop offset="100%" stop-color="#5500D7"/> </linearGradient> </defs> <path d="M56.399 14.68c3.654-3.846 9.616-10.963 6.924-13.847-2.885-2.885-10.001 3.269-13.847 6.731l-0.577-0.577c-0.385-0.385-0.962-0.577-1.539-0.385l-15.963 3.077c-0.385 0-0.577 0.192-0.769 0.385l-30.195 30.195c-0.577 0.577-0.577 1.731 0 2.308l20.963 20.963c0.385 0.385 0.769 0.385 1.154 0.385s0.769-0.192 1.154-0.385l30.003-30.003c0.192-0.192 0.385-0.577 0.385-0.769v0l3.077-15.963c0.192-0.577 0-1.154-0.385-1.539l-0.385-0.577zM53.899 16.988l-2.885 14.424-28.464 28.656-18.655-18.655 28.656-28.656 14.424-2.885c-1.539 1.731-4.039 4.423-5.962 7.116-1.923-0.192-3.654 0.385-5.193 1.923-2.5 2.5-2.5 6.731 0 9.232s6.731 2.5 9.232 0c1.346-1.346 2.116-3.27 1.923-5.193-0.192-1.154-0.577-2.308-1.154-3.077-0.192-0.385-0.385-0.577-0.769-0.769-0.192-0.192-0.577-0.577-0.769-0.769 1.154-1.731 2.885-3.654 5.193-5.962l2.5 2.5 1.923 2.116zM43.321 24.873c-0.192 0.385-0.385 0.577-0.577 0.962-1.346 1.346-3.27 1.346-4.616 0s-1.346-3.27 0-4.616c0.192-0.192 0.577-0.385 0.962-0.577 1.154-0.577 2.308-0.385 3.462 0.385 0.192 0 0.192 0.192 0.385 0.192 0 0 0.192 0.192 0.192 0.385 0.577 0.962 0.769 2.116 0.192 3.27zM54.091 12.372l-2.5-2.5c4.039-3.846 7.308-5.77 8.847-6.347-0.577 1.539-2.5 4.616-6.347 8.847z"/> </symbol><symbol id="amp-stories" viewBox="0 0 36 32"> <defs> <linearGradient id="gradient-stories" x1="81.726943%" x2="23.7165981%" y1="-28.3832685%" y2="119.978062%"> <stop offset="0%" stop-color="#FFF300"/> <stop offset="100%" stop-color="#FF8F00"/> </linearGradient> </defs> <path d="M7.111 0h21.333v32h-21.333v-32zM9.481 2.37v27.259h16.593v-27.259h-16.593zM0 4.741h2.37v22.519h-2.37v-22.519zM33.185 4.741h2.37v22.519h-2.37v-22.519z"/> </symbol><symbol id="amp-websites" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <defs> <linearGradient id="gradient-websites" x1="81.8129399%" x2="33.8766928%" y1="0%" y2="94.4849088%"> <stop offset="0%" stop-color="#00DCC0"/> <stop offset="100%" stop-color="#005AF0"/> </linearGradient> </defs> <path d="M63.196 4.646h-62.253c-0.566 0-0.943 0.377-0.943 0.755v53.010c0 0.566 0.377 0.943 0.943 0.943h62.253c0.566 0 0.755-0.377 0.755-0.755v-53.198c0.189-0.377-0.189-0.755-0.755-0.755zM3.395 18.040h57.348v33.202h-57.348v-33.202zM60.744 7.853v6.98h-57.348v-6.98h57.348zM3.395 56.147v-1.509h57.348v1.509h-57.348zM9.055 7.853c1.132 0 1.886 0.754 1.886 1.886s-0.755 1.886-1.886 1.886-1.886-0.755-1.886-1.886 0.943-1.886 1.886-1.886zM12.828 7.853c1.132 0 1.886 0.754 1.886 1.886s-0.755 1.886-1.886 1.886-1.886-0.755-1.886-1.886 0.943-1.886 1.886-1.886zM18.487 7.853c1.132 0 1.886 0.754 1.886 1.886s-0.755 1.886-1.886 1.886-1.886-0.755-1.886-1.886 0.943-1.886 1.886-1.886zM51.123 39.734l-11.13-13.96c-0.189-0.189-0.377-0.377-0.755-0.377v0c-0.189 0-0.566 0-0.755 0.377l-8.3 9.621-4.716-6.225c-0.189-0.189-0.377-0.377-0.755-0.377s-0.566 0-0.755 0.377l-8.866 10.376c-0.377 0.377-0.189 0.943 0 1.132s0.377 0.189 0.566 0.189c0.189 0 0.566 0 0.754-0.377l8.3-9.621 4.528 5.471-2.452 3.018c-0.377 0.377-0.189 0.943 0 1.132 0.377 0.189 0.943 0.189 1.132 0l11.319-13.017 10.376 13.205c0.189 0.189 0.377 0.377 0.755 0.377 0.189 0 0.377 0 0.566-0.189 0.377-0.377 0.566-0.943 0.189-1.132zM27.165 26.718c1.509 0 2.641-1.132 2.641-2.641 0-1.321-1.132-2.641-2.641-2.641s-2.641 1.132-2.641 2.641c0 1.509 1.132 2.641 2.641 2.641zM27.165 23.322c0.566 0 0.943 0.377 0.943 0.943s-0.377 0.943-0.943 0.943-0.943-0.377-0.943-0.943c0-0.566 0.377-0.943 0.943-0.943z"/> </symbol><symbol id="angle-down-solid" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"> <path d="M56.293 16.003c1.761-1.645 4.553-1.645 6.314 0 1.857 1.734 1.857 4.623 0 6.357l-27.45 25.638c-1.761 1.645-4.553 1.645-6.314 0l-27.45-25.638c-0.899-0.839-1.393-1.963-1.393-3.178s0.494-2.339 1.393-3.178c1.761-1.645 4.553-1.645 6.314 0l24.293 22.689 24.293-22.689z"/> </symbol><symbol id="logo" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 30 30"><g fill="none" fill-rule="evenodd"><path fill="#FFF" d="M0 15c0 8.284 6.716 15 15 15 8.285 0 15-6.716 15-15 0-8.284-6.715-15-15-15C6.716 0 0 6.716 0 15z"/><path fill="#005AF0" fill-rule="nonzero" d="M13.85 24.098h-1.14l1.128-6.823-3.49.005h-.05a.57.57 0 0 1-.568-.569c0-.135.125-.363.125-.363l6.272-10.46 1.16.005-1.156 6.834 3.508-.004h.056c.314 0 .569.254.569.568 0 .128-.05.24-.121.335L13.85 24.098zM15 0C6.716 0 0 6.716 0 15c0 8.284 6.716 15 15 15 8.285 0 15-6.716 15-15 0-8.284-6.715-15-15-15z"/></g></symbol> </defs> </svg> <header class="ap--header " [class]="'ap--header ' + (mainmenuopen ? 'mainmenuopen' : '')" i-amphtml-binding> <div class="ap-o-header"> <a class="ap-o-header-home" href="/"> <svg class="ap-o-header-home-logo"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#logo"/></svg> <span class="ap-o-header-home-title">AMP</span> </a> <nav class="ap-o-header-main"> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw "> About <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link websites" href="/about/websites/"> <div class="ap-o-header-flyout-primary-item-link-icon websites"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-websites"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info ap-o-header-flyout-primary-item-link-info-websites"> <div class="ap-o-header-flyout-item-title">AMP Websites</div> <div class="ap-o-header-flyout-item-description">Create flawless web experiences</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link stories" href="/about/stories/"> <div class="ap-o-header-flyout-primary-item-link-icon stories"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-stories"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info ap-o-header-flyout-primary-item-link-info-stories"> <div class="ap-o-header-flyout-item-title">Web Stories</div> <div class="ap-o-header-flyout-item-description">Snackable Stories for everyone</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link ads" href="/about/ads/"> <div class="ap-o-header-flyout-primary-item-link-icon ads"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-ads"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info ap-o-header-flyout-primary-item-link-info-ads"> <div class="ap-o-header-flyout-item-title">AMP Ads</div> <div class="ap-o-header-flyout-item-description">Super fast ads on the web</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link email" href="/about/email/"> <div class="ap-o-header-flyout-primary-item-link-icon email"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#amp-email"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info ap-o-header-flyout-primary-item-link-info-email"> <div class="ap-o-header-flyout-item-title">AMP Email</div> <div class="ap-o-header-flyout-item-description">Next gen email</div> </div> </a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/about/how-amp-works/">How AMP works</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/about/mission-and-vision/">Vision & Mission</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/about/use-cases/">Use cases</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/success-stories/">Success Stories</a> </li> </ul> </div> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw "> Documentation <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/documentation/">Get Started</a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/guides-and-tutorials/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#guides-documents"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Guides & Tutorials</div> <div class="ap-o-header-flyout-item-description">Get started with AMP</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/components/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#components-flyout"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Components</div> <div class="ap-o-header-flyout-item-description">The complete AMP library</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/examples/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#examples-flyout"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Examples</div> <div class="ap-o-header-flyout-item-description">Hands-on introduction to AMP</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/courses/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#learn"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Courses</div> <div class="ap-o-header-flyout-item-description">Learn AMP with free courses</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/templates/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#template"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Templates</div> <div class="ap-o-header-flyout-item-description">Ready to use</div> </div> </a> </li> <li class="ap-o-header-flyout-primary-item"> <a class="ap-o-header-flyout-primary-item-link " href="/documentation/tools/"> <div class="ap-o-header-flyout-primary-item-link-icon "> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#wrench"/></svg> </div> <div class="ap-o-header-flyout-primary-item-link-info"> <div class="ap-o-header-flyout-item-title">Tools</div> <div class="ap-o-header-flyout-item-description">Begin building</div> </div> </a> </li> </ul> </div> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw "> Community <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/documentation/guides-and-tutorials/contribute/">Contribute</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/community/roadmap/">Roadmap</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/community/governance/">Governance</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/community/working-groups/access-subscriptions/">Working Groups</a> </li> </ul> </div> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw "> Events <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/events/amp-fest-2020/">AMP Fest 2020</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/events/amp-roadshow/">AMP Roadshow</a> </li> </ul> </div> <div class="ap-o-header-main-item"> <a class="ap-o-header-main-link -tw" href="https://blog.amp.dev">Blog</a> </div> <div class="ap-o-header-main-item"> <button class="ap-o-header-main-link -tw active"> Support <div class="ap-a-ico ap-o-header-main-link-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </button> <ul class="ap-o-header-flyout"> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/support/">Help</a> </li> <li class="ap-o-header-flyout-item-secondary"> <a class="ap-o-header-flyout-item-title secondary" href="/support/faq/">FAQ</a> </li> </ul> </div> </nav> <div class="-tv"> <span class="-tm" aria-label="Select a language" tabindex="-1"> <span class="-tw">EN</span> <div class="ap-a-ico -ty"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </div> </span> <input class="-tg" type="checkbox" name="language-selector"> <div class="-tb" role="list"> <a class="-tw" href="/de/support/" role="listitem">Deutsch</a> <a class="-tw" href="/fr/support/" role="listitem">Français</a> <a class="-tw" href="/ar/support/" role="listitem">العربية</a> <a class="-tw" href="/es/support/" role="listitem">Español</a> <a class="-tw" href="/it/support/" role="listitem">Italiano</a> <a class="-tw" href="/id/support/" role="listitem">Indonesia</a> <a class="-tw" href="/ja/support/" role="listitem">日本語</a> <a class="-tw" href="/ko/support/" role="listitem">한국어</a> <a class="-tw" href="/pt_br/support/" role="listitem">Português</a> <a class="-tw" href="/ru/support/" role="listitem">Русский</a> <a class="-tw" href="/tr/support/" role="listitem">Türkçe</a> <a class="-tw" href="/zh_cn/support/" role="listitem">中文</a> <a class="-tw" href="/pl/support/" role="listitem">Polski</a> <a class="-tw" href="/vi/support/" role="listitem">Tiếng việt</a> </div> </div> </div> </header> <label class="ap-o-burger-menu-label" on="tap:AMP.setState({mainmenuopen: !mainmenuopen, noScrollState: !noScrollState})" [class]="'ap-o-burger-menu-label ' + (mainmenuopen ? 'mainmenuopen ' : '')" for="burger-menu" tabindex="0" role="button" aria-label="Burger Menu" i-amphtml-binding> <div class="ap-a-ico ap-o-burger-menu-icon"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#menu"/></svg> </div> </label> <nav class="ap-o-burger-menu" [class]="mainmenuopen ? 'ap-o-burger-menu mainmenuopen' : 'ap-o-burger-menu'" i-amphtml-binding> <ul class="-th"> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> About </label> <input class="-td" type="checkbox" aria-label="About"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/websites/"> AMP Websites </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/stories/"> Web Stories </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/ads/"> AMP Ads </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/email/"> AMP Email </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/how-amp-works/"> How AMP works </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/mission-and-vision/"> Vision & Mission </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/about/use-cases/"> Use cases </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/success-stories/"> Success Stories </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Documentation </label> <input class="-td" type="checkbox" aria-label="Documentation"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/"> Get Started </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/guides-and-tutorials/"> Guides & Tutorials </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/components/"> Components </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/examples/"> Examples </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/courses/"> Courses </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/templates/"> Templates </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/tools/"> Tools </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Community </label> <input class="-td" type="checkbox" aria-label="Community"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/documentation/guides-and-tutorials/contribute/"> Contribute </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/community/roadmap/"> Roadmap </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/community/governance/"> Governance </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/community/working-groups/access-subscriptions/"> Working Groups </a> </li> </ul> </li> <li class="-tp"> <label class="ap-o-burger-menu-link -tw "> Events </label> <input class="-td" type="checkbox" aria-label="Events"> <span class="nav-icon"> <svg class="ap-a-ico"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <ul class="-th"> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/events/amp-fest-2020/"> AMP Fest 2020 </a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tx" href="/events/amp-roadshow/"> AMP Roadshow </a> </li> </ul> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tw" href="https://blog.amp.dev">Blog</a> </li> <li class="-tp"> <a class="ap-o-burger-menu-link -tw " href="/support/"> Help </a> </li> </ul> </nav> <main class="ap--main -ar"> <div class="-tf"> <div class="-t"> <section class="ap--section"> <div class="ap--overview-title"> <div class="ap-m-overview-title"> <nav class="-ou"> <a class="ap-m-breadcrumbs-crumb" href="/support/">Support</a> <span class="ap-m-breadcrumbs-divider"> <svg class="ap-a-ico -oa"><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#angle-down-solid"/></svg> </span> <div class="ap-m-breadcrumbs-crumb">Help</div> </nav> <h1>Help</h1> </div> </div> <p>There are many ways to get help for questions and issues related to AMP:</p> <p><strong>Need help with AMP?</strong></p> <p>If you are looking for help to get started using AMP on your site or you are having issues using AMP, consult these resources:</p> <ul> <li><a href="https://amp.dev/documentation/guides-and-tutorials/">Official documentation</a> with guides and tutorials to help you learn about AMP.</li> <li><a href="https://amp.dev/documentation/examples/">Hands-on samples and demos</a> for using AMP components.</li> <li><a href="https://amp.dev/documentation/templates/">Pre-styled templates and components</a> that you can use to create styled AMP sites from scratch.</li> <li><a href="https://amp.dev/documentation/tools">AMP tools</a> helping you get started with building AMP pages.</li> <li><a href="https://amp.dev/support/faq/supported-browsers">AMP supported browsers</a> to learn which browsers support AMP.</li> <li><a href="http://stackoverflow.com/questions/tagged/amp-html">Stack Overflow</a> is our recommended way to find answers to questions about AMP. Since members of the AMP Project community regularly monitor Stack Overflow, you will probably receive the fastest response to your questions there.</li> <li>For AMP on Google Search questions or issues, please use <a href="https://support.google.com/webmasters/community">Google's Search Central forum</a>.</li> <li>To check the status of AMP serving and its related services, see the <a href="https://status.ampproject.org/">AMP Status</a> page.</li> </ul> <p><strong>Found a bug? Suggest a feature?</strong></p> <p>If you encounter a bug in AMP or have a feature request for AMP, see <a href="https://github.com/ampproject/amphtml/blob/main/docs/contributing.md#reporting-issues-with-amp">Reporting issues with AMP</a> for information on filing an issue or requesting features.</p> <p><strong>Contributing to AMP?</strong></p> <p><a href="https://github.com/ampproject/amphtml/blob/main/docs/contributing.md#ongoing-participation">Contributing to AMP HTML</a> is a great place to find out how you can make contributions to the AMP open source project and how you can get help if you run into questions when contributing to AMP.</p> </section> </div> </div> </main> <footer class="ap--footer"> <div class="-a"> <div class="-f"> <div class="ap-o-footer-hint">Of course, this site is made with AMP!</div> <div class="-l"> <h5 class="-c">Follow us</h5> <ul class="-h"> <li class="-p"> <a class="ap-a-ico -d" href="https://twitter.com/AMPhtml" rel="noopener" title="Twitter"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#twitter"/></svg> </a> </li> <li class="-p"> <a class="ap-a-ico -d" href="https://www.youtube.com/channel/UCXPBsjgKKG2HqsKBhWA4uQw" rel="noopener" title="YouTube"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#youtube"/></svg> </a> </li> <li class="-p"> <a class="ap-a-ico -d" href="https://blog.amp.dev/" rel="noopener"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#wordpress" title="WordPress"/></svg> </a> </li> <li class="-p"> <a class="ap-a-ico -d" href="https://github.com/ampproject" title="GitHub"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#github"/></svg> </a></li> <li class="-p"> <a class="ap-a-ico -d" href="https://stackoverflow.com/questions/tagged/amp-html" rel="noopener" title="Stackoverflow"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#stackoverflow"/></svg></a> </li> </ul> </div> </div> <div class="-v"> <div class="-m"> <h5 class="-g">Overview</h5> <ul class="-y"> <li class="-b"><a href="/about/websites/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>AMP Framework</a></li> <li class="-b"><a href="/about/use-cases/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Use Cases</a></li> <li class="-b"><a href="/success-stories/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Success stories</a></li> <li class="-b"><a href="/about/how-amp-works/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Functionality</a></li> </ul> </div> <div class="-m"> <h5 class="-g">Docs</h5> <ul class="-y"> <li class="-b"><a href="/documentation/guides-and-tutorials/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Get Started</a></li> <li class="-b"><a href="/documentation/guides-and-tutorials/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Guides and Tutorials</a></li> <li class="-b"><a href="/documentation/components/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Components</a></li> <li class="-b"><a href="/documentation/examples/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Examples</a></li> <li class="-b"><a href="/documentation/templates/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Design Templates</a></li> <li class="-b"><a href="/documentation/tools/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Tools</a></li> </ul> </div> <div class="-m"> <h5 class="-g">Community</h5> <ul class="-y"> <li class="-b"><a href="/support/faq/platform-and-vendor-partners/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Platform and Vendor Partners</a></li> <li class="-b"><a href="/documentation/guides-and-tutorials/contribute/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Contribute</a></li> <li class="-b"><a href="/community/roadmap/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Roadmap</a></li> </ul> <h5 class="-g">OpenJS Foundation</h5> <ul class="-y"> <li class="-b"><a class="-w" href="https://openjsf.org" rel="noopener"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>The OpenJS Foundation</a></li> <li class="-b"><a class="-w" href="https://bylaws.openjsf.org" rel="noopener"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>OpenJS Foundation Bylaws</a></li> <li class="-b"><a class="-w" href="https://trademark-policy.openjsf.org" rel="noopener"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Trademark Policy</a></li> <li class="-b"><a class="-w" href="https://trademark-list.openjsf.org" rel="noopener"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>Trademark List</a></li> </ul> </div> <div class="-m"> <h5 class="-g">Events</h5> <ul class="-y"> <li class="-b"><a href="https://blog.amp.dev/2020/02/20/amp-conf-2020-return-to-nyc/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>AMP Conf 2020</a></li> <li class="-b"><a href="/events/amp-cs-2019/" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#internal"/></svg></div>AMP Contributor Summit 2019</a></li> </ul> <h5 class="-g">AMP Brand Materials</h5> <ul class="-y"> <li class="-b"><a href="/static/files/brand-material/AMP_Mini_Styleguide.pdf" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#download"/></svg></div>Styleguide</a></li> <li class="-b"><a href="/static/files/brand-material/AMP_Logo_Rebrush.zip" class="-w"><div class="ap-a-ico -x"><svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#download"/></svg></div>Logos</a></li> </ul> </div> </div> <div class="-k"> <div class="-_"> <amp-img src="/static/img/logo-openjsf.svg" alt="Logo of the OpenJS Foundation" width="315" height="100" layout="responsive" class="i-amphtml-layout-responsive i-amphtml-layout-size-defined" i-amphtml-layout="responsive"><i-amphtml-sizer slot="i-amphtml-svc" style="display:block;padding-top:31.746%"></i-amphtml-sizer></amp-img> </div> <ul class="-j"> <li class="-q"><a class="-z" href="https://terms-of-use.openjsf.org" rel="noopener">Terms of Use</a></li> <li class="-q"><a class="-z" href="https://privacy-policy.openjsf.org" rel="noopener">Privacy Policy</a></li> <li class="-q"><a class="-z" href="https://www.linuxfoundation.org/cookies" rel="noopener">Cookie Policy</a></li> </ul> </div> <div class="-te"> © <a href="https://openjsf.org">OpenJS Foundation</a> and AMP Project contributors. All rights reserved. The <a href="https://openjsf.org">OpenJS Foundation</a> has registered trademarks and uses trademarks. For a list of trademarks of the <a href="https://openjsf.org">OpenJS Foundation</a>, please see our <a href="https://trademark-policy.openjsf.org">Trademark Policy</a> and <a href="https://trademark-list.openjsf.org">Trademark List</a>. Trademarks and logos not indicated on the <a href="https://trademark-list.openjsf.org">list of OpenJS Foundation trademarks</a> are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. <br><br> The services available at <a href="https://cdn.ampproject.org">cdn.ampproject.org</a> are provided by Google and the respective <a href="https://policies.google.com/privacy?hl=en">privacy policy</a> applies. </div> </div> </footer> <amp-analytics type="gtag" data-credentials="include" data-block-on-consent class="i-amphtml-layout-fixed i-amphtml-layout-size-defined" style="width:1px;height:1px;" i-amphtml-layout="fixed"> <script type="application/json">{"extraUrlParams":{"cd2":"${ampdocHost}"},"requests":{"CWV_EVENT":"${base}?v=1\u0026t=event\u0026tid=${gtag_id}\u0026cid=0\u0026ec=cwv","base":"https://google-analytics.com/collect/"},"triggers":{"banner":{"on":"click","selector":"#top-banner","vars":{"event_action":"click","event_category":"other","event_label":"banner","event_name":"banner"}},"cls":{"extraUrlParams":{"cls":"${cumulativeLayoutShift}"},"on":"visible","request":"CWV_EVENT"},"defaultPageview":{"on":"visible","request":"pageview","vars":{"title":"{{title}}"}},"fid":{"extraUrlParams":{"fid":"${firstInputDelay}"},"on":"visible","request":"CWV_EVENT"},"lcp":{"extraUrlParams":{"lcp":"${largestContentfulPaint}"},"on":"visible","request":"CWV_EVENT"},"navigation":{"on":"click","selector":".ap--header a, .ap-o-burger-menu-link","vars":{"event_action":"link","event_category":"other","event_label":"navigation","event_name":"navigation"}},"scrolledEnd":{"on":"scroll","scrollSpec":{"verticalBoundaries":[90]},"vars":{"event_action":"end","event_category":"other","event_label":"scroll","event_name":"scroll"}},"scrolledHalf":{"on":"scroll","scrollSpec":{"verticalBoundaries":[50]},"vars":{"event_action":"half","event_category":"other","event_label":"scroll","event_name":"scroll"}},"searchButton":{"on":"click","selector":"#searchTriggerOpen","vars":{"event_action":"open","event_category":"search","event_label":"search","event_name":"search"}}},"vars":{"config":{"G-TYM9BH1XCX":{"groups":"default"}},"gtag_id":"G-TYM9BH1XCX"}}</script> </amp-analytics><amp-geo layout="nodisplay" class="i-amphtml-layout-nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"> <script type="application/json">{"ISOCountryGroups":{"eu":["preset-eea"],"doubleOptIn":["de","at","no","gr","lu"]}}</script> </amp-geo> <amp-consent id="consent" class="-o i-amphtml-layout-nodisplay" layout="nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"> <script type="application/json">{"consentInstanceId":"consent","promptUI":"consent-popup","consentRequired":false,"geoOverride":{"eu":{"consentRequired":true}}}</script> <div id="consent-popup" class="consent-popup"> <button type="reset" class="-u" on="tap:consent.dismiss" role="button" tabindex="0" aria-label="Dismiss consent"> <svg><use xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#close"/></svg> </button> <p class="ap-o-consent-text"> We use cookies to understand how you use our site and to improve your experience. By continuing to use our site, you accept our <a href="https://policies.google.com/technologies/cookies">use of cookies</a> and <a href="https://policies.google.com/privacy">privacy policy</a>. </p> <button on="tap:consent.accept" class="ap-a-btn" role="button" aria-label="Accept use of cookies">Got it!</button> </div> </amp-consent> <amp-install-serviceworker src="/serviceworker.js" data-iframe-src="https://amp.dev/serviceworker.html" layout="nodisplay" class="i-amphtml-layout-nodisplay" hidden="hidden" i-amphtml-layout="nodisplay"></amp-install-serviceworker> <style amp-keyframes>@keyframes duepduep{0%{transform:translate(0)}49%{transform:translate(40px)}50%{transform:translate(-40px)}to{transform:translate(0)}}</style></body></html>