CINXE.COM
CSS --*
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="keywords" content="CSS --*, custom properties, property"> <meta name="Description" content="CSS --* family of properties define the substitution value of var() functions in CSS."> <link rel="canonical" href="https://www.quackit.com/css/css3/properties/css_--.cfm"> <title>CSS --*</title> <script src="//ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script> <link rel="shortcut icon" href="/pix/favicon96.png"> <link rel="apple-touch-icon" href="/pix/apple-touch-icon.png"> <link rel="preconnect" href="https://fonts.googleapis.com"> <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin> <link href="https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,400;0,700;1,400&display=swap" rel="stylesheet"> <link href="/common/css/master.45.min.css" rel="stylesheet"> <script async src="https://cdn.fuseplatform.net/publift/tags/2/3499/fuse.js"></script> <!-- Global site tag (gtag.js) - Google Analytics --> <script async src="https://www.googletagmanager.com/gtag/js?id=G-Q3H025ZKLN"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'G-Q3H025ZKLN'); </script> </head> <body> <header class="site-header"> <div class="site-header-base"> <div class="site-logo"> <a title="Quackit Homepage" target="_top" href="/"><img src="/pix/quackit_logo_watermark.png" width="87" height="33" alt="Quackit Logo"></a> </div> <button id="site-nav-toggler" class="site-nav-toggler" aria-expanded="false" aria-controls="site-nav"> <span class="sr-only">Toggle navigation</span> ☰ </button> </div> <nav id="site-nav" class="site-nav"> <div class="site-links"> <ul> <li><a href="/"><i class="fa fa-home"></i> <span class="sr-only">Home</span></a></li> <li><a href="/html/">HTML</a></li> <li><a href="/css/">CSS</a></li> <li><a href="/scripting/">Scripting</a></li> <li><a href="/database/">Database</a></li> </ul> </div> <div class="site-search-top"> <form action="/search/" id="cse-search-box-bottom" class="site-search"> <div> <input type="hidden" name="cx" value="partner-pub-6331358926293806:98x0fk-bbgi"> <input type="hidden" name="cof" value="FORID:10"> <input type="hidden" name="ie" value="ISO-8859-1"> <input type="text" name="q" size="20" class="site-search-input"> <button type="submit" name="sa" class="site-search-button"><i class="fa fa-search"></i></button> </div> </form> </div> </nav> </header> <div class="main"> <article class="content"> <h1 class="page-title">CSS --*</h1> <div class="ad ad-top"> <!-- GAM 71161633/QCKIT_quackit/article_header --> <div data-fuse="23059883623"></div> </div> <script src="/common/js/codemirror/lib/codemirror.js"></script> <script src="/common/js/codemirror/mode/css/css.js"></script> <div class="code-only"> <textarea id="example1" autocomplete="off" spellcheck="false"><style>
:root {
 --main-color: saddlebrown;
 --main-bgcolor: gold;
 --main-font: sans-serif;
}
body {
 color: var(--main-color);
 background-color: var(--main-bgcolor);
 font-family: var(--main-font);
}
</style>

<body>
 <h1>Custom Properties</h1>
</body></textarea> <p> <a class="btn btn-default" href="/html/html_editors/scratchpad/?example=/css/css3/properties/css_--" target="_blank" title="Full-page editor. Opens this example in the full-page editor."><i class="fa fa-pencil-square-o"></i> View Output</i></a> </p> </div> <script> var exampleCode1 = CodeMirror.fromTextArea(document.getElementById("example1"), { mode: "text/css", tabMode: "indent", styleActiveLine: false, lineNumbers: false, lineWrapping: true, theme: "q-dark" }); </script> <p class="lead">In CSS, the <code>--*</code> syntax defines a custom property. It defines the substitution value of <a href="/css/functions/css_var_function.cfm"><code>var()</code></a> functions.</p> <p>A <dfn>custom property</dfn> can be thought of as a variable. Custom properties allow you to define a value in one place, then reuse that value elsewhere in your style sheets, simply by using the name of the custom property.</p> <p>Custom properties can be handy when you need to use the same property values in many different parts of your style sheet. Rather than duplicate that value across multiple parts of the style sheet, you can use a custom property instead. If you need to update the value, you only need to do it in one place.</p> <p>The <code>--*</code> syntax is what you must use when you define a custom property. The asterisk (<code>*</code>) is a wildcard for other characters.</p> <p>Custom properties are defined as any valid identifier that starts with two dashes (U+002D HYPHEN-MINUS). For example, a custom property could be called <code>--main-color</code>. You could then refer to that custom property by passing that value to the <a href="/css/functions/css_var_function.cfm"><code>var()</code></a> function.</p> <div class="ad"> <!-- GAM 71161633/QCKIT_quackit/article_incontent_1 --> <div data-fuse="23059883629"></div> </div> <h2>Case-Sensitivity</h2> <p>It's important to note that custom properties are case-sensitive. This is in contrast to <a href="/css/properties/">regular CSS properties</a>, which are case-insensitive.</p> <p>Therefore, <code>--main-color</code> and <code>--Main-Color</code> are two different properties.</p> <p>Here's an example that demonstrates this.</p> <script src="/common/js/codemirror/mode/text/css/text/css.js"></script> <div class="code-only"> <textarea id="example2" autocomplete="off" spellcheck="false"><style>
:root {
 --main-color: saddlebrown;
 --main-bgcolor: gold;
 --main-font: sans-serif;
}
body {
 color: var(--Main-Color);
 background-color: var(--MAIN-BGCOLOR);
 font-family: var(--MAIN-Font);
}
</style>

<body>
 <h1>Custom Properties</h1>
</body></textarea> <p> <a class="btn btn-default" href="/html/html_editors/scratchpad/?example=/css/css3/properties/css_--_case-sensitivity" target="_blank" title="Full-page editor. Opens this example in the full-page editor."><i class="fa fa-pencil-square-o"></i> View Output</i></a> </p> </div> <script> var exampleCode2 = CodeMirror.fromTextArea(document.getElementById("example2"), { mode: "text/css", tabMode: "indent", styleActiveLine: false, lineNumbers: false, lineWrapping: true, theme: "q-dark" }); </script> <p>This is exactly the same as the first example above, except that I'm now using the wrong case when referencing the custom properties.</p> <p>Because of this, the <a href="/css/functions/css_var_function.cfm"><code>var()</code></a> function has no effect. </p> <p>However, if I used a fallback value, then the fallback value would be used.</p> <h2>Fallback Values</h2> <p>When using the <a href="/css/functions/css_var_function.cfm"><code>var()</code></a> function, you can optionally provide a fallback value to be used in case the custom property is invalid.</p> <p>Here's an example of using a fallback value.</p> <div class="code-only"> <textarea id="example3" autocomplete="off" spellcheck="false"><style>
body {
 color: var(--main-color, saddlebrown);
 background-color: var(--main-bgcolor, gold);
 font-family: var(--main-font, sans-serif);
}
</style>

<body>
 <h1>Custom Properties</h1>
</body></textarea> <p> <a class="btn btn-default" href="/html/html_editors/scratchpad/?example=/css/css3/properties/css_--_fallback" target="_blank" title="Full-page editor. Opens this example in the full-page editor."><i class="fa fa-pencil-square-o"></i> View Output</i></a> </p> </div> <script> var exampleCode3 = CodeMirror.fromTextArea(document.getElementById("example3"), { mode: "text/css", tabMode: "indent", styleActiveLine: false, lineNumbers: false, lineWrapping: true, theme: "q-dark" }); </script> <p>In this case, the custom properties weren't even defined, so the <a href="/css/functions/css_var_function.cfm"><code>var()</code></a> function used the fallback values.</p> <h2>Basic Property Information</h2> <div class="specifications"> <dl> <dt>Initial Value</dt> <dd>(Nothing)</dd> <dt>Applies To</dt> <dd>All elements</dd> <dt>Inherited?</dt> <dd>Yes</dd> <dt>Media</dt> <dd>All</dd> <dt>Computed Value</dt> <dd>Specified value with variables substituted</dd> <dt>Animatable</dt> <dd>No</dd> </dl> </div> <h2>CSS Specifications</h2> <p>Custom properties are <a target="_blank" href="https://www.w3.org/TR/css-variables-1/#defining-variables">defined</a> in the <a target="_blank" href="https://www.w3.org/TR/css-variables-1/">CSS Custom Properties for Cascading Variables Module Level 1</a> (W3C Candidate Recommendation, 03 December 2015)</p> <h2>Browser Support</h2> <p>The following table provided by <a target="_blank" href="http://caniuse.com/">Caniuse.com</a> shows the level of browser support for this feature.</p> <iframe sandbox style="width: 100%;height: 350px;" src="//caniuse.com/css-variables/embed/"></iframe> <h2>Vendor Prefixes</h2> <p>For maximum browser compatibility many web developers add browser-specific properties by using extensions such as <code>-webkit-</code> for Safari, Google Chrome, and Opera (newer versions), <code>-ms-</code> for Internet Explorer, <code>-moz-</code> for Firefox, <code>-o-</code> for older versions of Opera etc. As with any CSS property, if a browser doesn't support a proprietary extension, it will simply ignore it.</p> <p>This practice is not recommended by the W3C, however in many cases, the only way you can test a property is to include the CSS extension that is compatible with your browser.</p> <p>The major browser manufacturers generally strive to adhere to the W3C specifications, and when they support a non-prefixed property, they typically remove the prefixed version. Also, W3C advises vendors to remove their prefixes for properties that reach Candidate Recommendation status.</p> <p>Many developers use <a href="https://github.com/postcss/autoprefixer">Autoprefixer</a>, which is a postprocessor for CSS. Autoprefixer automatically adds vendor prefixes to your CSS so that you don't need to. It also removes old, unnecessary prefixes from your CSS.</p> <p>You can also use Autoprefixer with preprocessors such as Less and <a href="/sass/tutorial/">Sass</a>.</p> </article> <div class="sidebar"> <nav> <ul> <li> <h3><a href="/css/css3/properties/">CSS3 Properties</a></h3> <ul> <li><h4 title="Grid Layout">Grid</h4> <ul> <li><a href="/css/css3/properties/css_grid-area.cfm">grid-area</a></li> <li><a href="/css/css3/properties/css_grid-auto-columns.cfm">grid-auto-columns</a></li> <li><a href="/css/css3/properties/css_grid-auto-flow.cfm">grid-auto-flow</a></li> <li><a href="/css/css3/properties/css_grid-auto-rows.cfm">grid-auto-rows</a></li> <li><a href="/css/css3/properties/css_grid-column-end.cfm">grid-column-end</a></li> <li><a href="/css/css3/properties/css_grid-column-gap.cfm">grid-column-gap</a></li> <li><a href="/css/css3/properties/css_grid-column-start.cfm">grid-column-start</a></li> <li><a href="/css/css3/properties/css_grid-column.cfm">grid-column</a></li> <li><a href="/css/css3/properties/css_grid-gap.cfm">grid-gap</a></li> <li><a href="/css/css3/properties/css_grid-row-end.cfm">grid-row-end</a></li> <li><a href="/css/css3/properties/css_grid-row-gap.cfm">grid-row-gap</a></li> <li><a href="/css/css3/properties/css_grid-row-start.cfm">grid-row-start</a></li> <li><a href="/css/css3/properties/css_grid-row.cfm">grid-row</a></li> <li><a href="/css/css3/properties/css_grid-template-areas.cfm">grid-template-areas</a></li> <li><a href="/css/css3/properties/css_grid-template-columns.cfm">grid-template-columns</a></li> <li><a href="/css/css3/properties/css_grid-template-rows.cfm">grid-template-rows</a></li> <li><a href="/css/css3/properties/css_grid-template.cfm">grid-template</a></li> <li><a href="/css/css3/properties/css_grid.cfm">grid</a></li> </ul> </li> <li><h4>Animation</h4> <ul> <li><a href="/css/at-rules/css_keyframes_at-rule.cfm">@keframes</a></li> <li><a href="/css/css3/properties/css_animation.cfm">animation</a></li> <li><a href="/css/css3/properties/css_animation-delay.cfm">animation-delay</a></li> <li><a href="/css/css3/properties/css_animation-direction.cfm">animation-direction</a></li> <li><a href="/css/css3/properties/css_animation-duration.cfm">animation-duration</a></li> <li><a href="/css/css3/properties/css_animation-fill-mode.cfm">animation-fill-mode</a></li> <li><a href="/css/css3/properties/css_animation-iteration-count.cfm">animation-iteration-count</a></li> <li><a href="/css/css3/properties/css_animation-name.cfm">animation-name</a></li> <li><a href="/css/css3/properties/css_animation-play-state.cfm">animation-play-state</a></li> <li><a href="/css/css3/properties/css_animation-timing-function.cfm">animation-timing-function</a></li> </ul> </li> <li><h4 title="Flexible Box Layout">Flexbox</h4> <ul> <li><a href="/css/css3/properties/css_flex.cfm">flex</a></li> <li><a href="/css/css3/properties/css_flex-basis.cfm">flex-basis</a></li> <li><a href="/css/css3/properties/css_flex-direction.cfm">flex-direction</a></li> <li><a href="/css/css3/properties/css_flex-flow.cfm">flex-flow</a></li> <li><a href="/css/css3/properties/css_flex-grow.cfm">flex-grow</a></li> <li><a href="/css/css3/properties/css_flex-shrink.cfm">flex-shrink</a></li> <li><a href="/css/css3/properties/css_flex-wrap.cfm">flex-wrap</a></li> <li><a href="/css/css3/properties/css_order.cfm">order</a></li> </ul> </li> <li><h4>Transition</h4> <ul> <li><a href="/css/css3/properties/css_transition.cfm">transition</a></li> <li><a href="/css/css3/properties/css_transition-delay.cfm">transition-delay</a></li> <li><a href="/css/css3/properties/css_transition-duration.cfm">transition-duration</a></li> <li><a href="/css/css3/properties/css_transition-property.cfm">transition-property</a></li> <li><a href="/css/css3/properties/css_transition-timing-function.cfm">transition-timing-function</a></li> </ul> </li> <li><h4>Transform</h4> <ul> <li><a href="/css/css3/properties/css_backface-visibility.cfm">backface-visibility</a></li> <li><a href="/css/css3/properties/css_perspective.cfm">perspective</a></li> <li><a href="/css/css3/properties/css_perspective-origin.cfm">perspective-origin</a></li> <li><a href="/css/css3/properties/css_transform.cfm">transform</a></li> <li><a href="/css/css3/properties/css_transform-box.cfm">transform-box</a></li> <li><a href="/css/css3/properties/css_transform-origin.cfm">transform-origin</a></li> <li><a href="/css/css3/properties/css_transform-style.cfm">transform-style</a></li> </ul> </li> <li><h4>Multi-Column</h4> <ul> <li><a href="/css/css3/properties/css_break-after.cfm">break-after</a></li> <li><a href="/css/css3/properties/css_break-before.cfm">break-before</a></li> <li><a href="/css/css3/properties/css_break-inside.cfm">break-inside</a></li> <li><a href="/css/css3/properties/css_columns.cfm">columns</a></li> <li><a href="/css/css3/properties/css_column-count.cfm">column-count</a></li> <li><a href="/css/css3/properties/css_column-fill.cfm">column-fill</a></li> <li><a href="/css/css3/properties/css_column-rule.cfm">column-rule</a></li> <li><a href="/css/css3/properties/css_column-rule-color.cfm">column-rule-color</a></li> <li><a href="/css/css3/properties/css_column-rule-style.cfm">column-rule-style</a></li> <li><a href="/css/css3/properties/css_column-rule-width.cfm">column-rule-width</a></li> <li><a href="/css/css3/properties/css_column-span.cfm">column-span</a></li> <li><a href="/css/css3/properties/css_column-width.cfm">column-width</a></li> </ul> </li> <li><h4>Borders</h4> <ul> <li><a href="/css/css3/properties/css_border-radius.cfm">border-radius</a></li> <li><a href="/css/css3/properties/css_border-top-left-radius.cfm">border-top-left-radius</a></li> <li><a href="/css/css3/properties/css_border-top-right-radius.cfm">border-top-right-radius</a></li> <li><a href="/css/css3/properties/css_border-bottom-left-radius.cfm">border-bottom-left-radius</a></li> <li><a href="/css/css3/properties/css_border-bottom-right-radius.cfm">border-bottom-right-radius</a></li> <li><a href="/css/css3/properties/css_border-image.cfm">border-image</a></li> <li><a href="/css/css3/properties/css_border-image-outset.cfm">border-image-outset</a></li> <li><a href="/css/css3/properties/css_border-image-repeat.cfm">border-image-repeat</a></li> <li><a href="/css/css3/properties/css_border-image-source.cfm">border-image-source</a></li> <li><a href="/css/css3/properties/css_border-image-slice.cfm">border-image-slice</a></li> <li><a href="/css/css3/properties/css_border-image-width.cfm">border-image-width</a></li> </ul> </li> <li><h4>Color/Image Effects</h4> <ul> <li><a href="/css/css3/properties/css_caret-color.cfm">caret-color</a></li> <li><a href="/css/css3/properties/css_box-shadow.cfm">box-shadow</a></li> <li><a href="/css/css3/properties/css_filter.cfm">filter</a></li> <li><a href="/css/css3/properties/css_image-rendering.cfm">image-rendering</a></li> <li><a href="/css/css3/properties/css_isolation.cfm">isolation</a></li> <li><a href="/css/css3/properties/css_mix-blend-mode.cfm">mix-blend-mode</a></li> <li><a href="/css/css3/properties/css_object-fit.cfm">object-fit</a></li> <li><a href="/css/css3/properties/css_object-position.cfm">object-position</a></li> <li><a href="/css/css3/properties/css_opacity.cfm">opacity</a></li> <li><a href="/css/css3/gradients/linear_gradients.cfm">Linear Gradients</a></li> <li><a href="/css/css3/gradients/radial_gradients.cfm">Radial Gradients</a></li> <li><a href="/css/css3/gradients/">CSS Gradients</a></li> </ul> </li> <li><h4>Text Decoration</h4> <ul> <li><a href="/css/css3/properties/css_text-decoration.cfm">text-decoration</a></li> <li><a href="/css/css3/properties/css_text-decoration-line.cfm">text-decoration-line</a></li> <li><a href="/css/css3/properties/css_text-decoration-style.cfm">text-decoration-style</a></li> <li><a href="/css/css3/properties/css_text-decoration-color.cfm">text-decoration-color</a></li> <li><a href="/css/css3/properties/css_text-decoration-skip.cfm">text-decoration-skip</a></li> <li><a href="/css/css3/properties/css_text-underline-position.cfm">text-underline-position</a></li> </ul> </li> <li><h4>New Background Properties</h4> <ul> <li><a href="/css/css3/properties/css_background-blend-mode.cfm">background-blend-mode</a></li> <li><a href="/css/css3/properties/css_background-clip.cfm">background-clip</a></li> <li><a href="/css/css3/properties/css_background-origin.cfm">background-origin</a></li> <li><a href="/css/css3/properties/css_background-size.cfm">background-size</a></li> </ul> </li> <li><h4>Overflow/Resize</h4> <ul> <li><a href="/css/css3/properties/css_overflow.cfm">overflow</a></li> <li><a href="/css/css3/properties/css_overflow-wrap.cfm">overflow-wrap</a></li> <li><a href="/css/css3/properties/css_overflow-x.cfm">overflow-x</a></li> <li><a href="/css/css3/properties/css_overflow-y.cfm">overflow-y</a></li> <li><a href="/css/css3/properties/css_resize.cfm">resize</a></li> <li><a href="/css/css3/properties/css_text-overflow.cfm">text-overflow</a></li> </ul> </li> <li><h4>Text Wrapping</h4> <ul> <li><a href="/css/css3/properties/css_hyphens.cfm">hyphens</a></li> <li><a href="/css/css3/properties/css_line-break.cfm">line-break</a></li> <li><a href="/css/css3/properties/css_word-break.cfm">word-break</a></li> <li><a href="/css/css3/properties/css_word-wrap.cfm">word-wrap</a></li> </ul> </li> <li><h4>New Font Properties</h4> <ul> <li><a href="/css/css3/properties/css_font-feature-settings.cfm">font-feature-settings</a></li> <li><a href="/css/css3/properties/css_font-kerning.cfm">font-kerning</a></li> <li><a href="/css/css3/properties/css_font-language-override.cfm">font-language-override</a></li> <li><a href="/css/css3/properties/css_font-synthesis.cfm">font-synthesis</a></li> <li><a href="/css/css3/properties/css_font-variant-alternates.cfm">font-variant-alternates</a></li> <li><a href="/css/css3/properties/css_font-variant-caps.cfm">font-variant-caps</a></li> <li><a href="/css/css3/properties/css_font-variant-east-asian.cfm">font-variant-east-asian</a></li> <li><a href="/css/css3/properties/css_font-variant-ligatures.cfm">font-variant-ligatures</a></li> <li><a href="/css/css3/properties/css_font-variant-numeric.cfm">font-variant-numeric</a></li> <li><a href="/css/css3/properties/css_font-variant-position.cfm">font-variant-position</a></li> </ul> </li> <li><h4>New Alignment Properties</h4> <ul> <li><a href="/css/css3/properties/css_align-content.cfm">align-content</a></li> <li><a href="/css/css3/properties/css_align-items.cfm">align-items</a></li> <li><a href="/css/css3/properties/css_align-self.cfm">align-self</a></li> <li><a href="/css/css3/properties/css_column-gap.cfm">column-gap</a></li> <li><a href="/css/css3/properties/css_gap.cfm">gap</a></li> <li><a href="/css/css3/properties/css_justify-content.cfm">justify-content</a></li> <li><a href="/css/css3/properties/css_justify-items.cfm">justify-items</a></li> <li><a href="/css/css3/properties/css_justify-self.cfm">justify-self</a></li> <li><a href="/css/css3/properties/css_place-content.cfm">place-content</a></li> <li><a href="/css/css3/properties/css_place-items.cfm">place-items</a></li> <li><a href="/css/css3/properties/css_place-self.cfm">place-self</a></li> <li><a href="/css/css3/properties/css_row-gap.cfm">row-gap</a></li> </ul> </li> <li><h4>Text Manipulation</h4> <ul> <li><a href="/css/css3/properties/css_hanging-punctuation.cfm">hanging-punctuation</a></li> <li><a href="/css/css3/properties/css_tab-size.cfm">tab-size</a></li> <li><a href="/css/css3/properties/css_text-align-all.cfm">text-align-all</a></li> <li><a href="/css/css3/properties/css_text-align-last.cfm">text-align-last</a></li> <li><a href="/css/css3/properties/css_text-justify.cfm">text-justify</a></li> </ul> </li> <li><h4>Keyboard Control</h4> <ul> <li><a href="/css/css3/properties/css_nav-up.cfm">nav-up</a></li> <li><a href="/css/css3/properties/css_nav-down.cfm">nav-down</a></li> <li><a href="/css/css3/properties/css_nav-left.cfm">nav-left</a></li> <li><a href="/css/css3/properties/css_nav-right.cfm">nav-right</a></li> </ul> </li> <li><h4>Speech Media</h4> <ul> <li><a href="/css/css3/properties/css_rest-after.cfm">rest-after</a></li> <li><a href="/css/css3/properties/css_rest-before.cfm">rest-before</a></li> <li><a href="/css/css3/properties/css_rest.cfm">rest</a></li> <li><a href="/css/css3/properties/css_speak-as.cfm">speak-as</a></li> <li><a href="/css/css3/properties/css_voice-balance.cfm">voice-balance</a></li> <li><a href="/css/css3/properties/css_voice-duration.cfm">voice-duration</a></li> <li><a href="/css/css3/properties/css_voice-pitch.cfm">voice-pitch</a></li> <li><a href="/css/css3/properties/css_voice-range.cfm">voice-range</a></li> <li><a href="/css/css3/properties/css_voice-rate.cfm">voice-rate</a></li> <li><a href="/css/css3/properties/css_voice-stress.cfm">voice-stress</a></li> <li><a href="/css/css3/properties/css_voice-volume.cfm">voice-volume</a></li> </ul> </li> <li><h4>Other New Properties</h4> <ul> <li><a href="/css/css3/properties/css_--.cfm">--*</a></li> <li><a href="/css/css3/properties/css_all.cfm">all</a></li> <li><a href="/css/css3/properties/css_bleed.cfm">bleed</a></li> <li><a href="/css/css3/properties/css_box-sizing.cfm">box-sizing</a></li> <li><a href="/css/css3/properties/css_box-decoration-break.cfm">box-decoration-break</a></li> <li><a href="/css/css3/properties/css_color-interpolation-filters.cfm">color-interpolation-filters</a></li> <li><a href="/css/css3/properties/css_flood-color.cfm">flood-color</a></li> <li><a href="/css/css3/properties/css_flood-opacity.cfm">flood-opacity</a></li> <li><a href="/css/css3/properties/css_lighting-color.cfm">lighting-color</a></li> <li><a href="/css/css3/properties/css_outline-offset.cfm">outline-offset</a></li> <li><a href="/css/css3/properties/css_text-combine-upright.cfm">text-combine-upright</a></li> <li><a href="/css/css3/properties/css_text-orientation.cfm">text-orientation</a></li> <li><a href="/css/css3/properties/css_will-change.cfm">will-change</a></li> <li><a href="/css/css3/properties/css_writing-mode.cfm">writing-mode</a></li> </ul> </li> </ul> </li> <li> <h3><a href="/css/reference/">CSS Reference</a></h3> <ul> <li><a href="/css/examples/" title="Copy & paste code examples.">CSS Examples</a></li> <li><a href="/css/properties/" title="All CSS properties listed alphabetically.">CSS Properties</a></li> <li><a href="/css/functions/" title="All CSS functions listed alphabetically.">CSS Functions</a></li> <li><a href="/css/data_types/" title="">CSS Data Types</a></li> <li><a href="/css/at-rules/" title="">CSS @-Rules</a></li> <li><a href="/css/selectors/" title="All CSS selectors.">CSS Selectors</a></li> <li><a href="/css/css3/animations/animatable_properties/" title="Properties that support CSS animations.">CSS Animatable Properties</a></li> <li><a href="/css/color/" title="Full CSS color reference, includes color picker, charts, generators, and more.">CSS Color</a></li> <li><a href="/css/css_color_codes.cfm" title="">CSS Color Codes</a></li> <li><a href="/css/tutorial/" title="">CSS Tutorial</a></li> <li><a href="/css/flexbox/tutorial/" title="">Flexbox Tutorial</a></li> <li><a href="/css/grid/tutorial/" title="">Grid Tutorial</a></li> <li><a href="/css/css_media_types.cfm" title="Use CSS to apply a separate style depending on the media type that is displaying your web page">CSS Media Types</a></li> <li><a href="/css/css_media_features.cfm" title="Use CSS to apply a separate style depending on the media features available in the output device">CSS Media Features</a></li> <li><a href="/bootstrap/tutorial/" title="Bootstrap is a free and open-source framework for creating websites and web applications.">Bootstrap Tutorial</a></li> <li><a href="/sass/tutorial/" title="Sass is a CSS preprocessor to help create maintainable style sheets.">Sass Tutorial</a></li> </ul> </li> </ul> </nav> <div class="ad ad-left"> <!-- GAM 71161633/QCKIT_quackit/article_vrec_2 --> <div data-fuse="23059511712"></div> </div> </div> <div class="ads"> <div class="ad ad-right"> <!-- GAM 71161633/QCKIT_quackit/article_vrec_1 --> <div data-fuse="23059883626"></div> </div> </div> </div> <div class="searchbox-bottom"> <form action="/search/" id="cse-search-box-bottom" class="site-search"> <div> <input type="hidden" name="cx" value="partner-pub-6331358926293806:npmuvy-i8kk"> <input type="hidden" name="cof" value="FORID:10"> <input type="hidden" name="ie" value="ISO-8859-1"> <input type="text" name="q" size="30" class="site-search-input"> <button type="submit" name="sa" class="site-search-button"><i class="fa fa-search"></i></button> </div> </form> <script src="//cse.google.com/cse/brand?form=cse-search-box-bottom&lang=en"></script> </div> <footer> <p class="about"><a href="/"><i class="fa fa-home"></i> Home</a> | <a href="/about.cfm" rel="nofollow">About</a> | <a href="/contact.cfm" rel="nofollow">Contact</a> | <a href="/terms_of_use.cfm" rel="nofollow">Terms of Use</a> | <a href="/privacy_policy.cfm" rel="nofollow">Privacy Policy</a></p> <p>© Copyright 2000 - 2024 Quackit.com </p> </footer> <script src="/common/js/spectrum/spectrum.js"></script> <script src="/common/js/lightbox2-master/dist/js/lightbox.min.js" charset="utf-8"></script> <script> $(document).ready(function(){ $( "#site-nav-toggler" ).click(function() { $( "#site-nav" ).toggle( "slow" ); }); }); </script> <script> $(function(){var a=window.location.href;$(".sidebar nav a").each(function(){a==this.href&&$(this).closest("li").addClass("selected")})}); </script> </body> </html>