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---
title: ':fullscreen'
slug: 'Web/CSS/:fullscreen'
tags:
- CSS
- CSS Pseudo-class
- Experimental
- Full-screen
- Reference
translation_of: 'Web/CSS/:fullscreen'
---
<div>{{CSSRef}}{{SeeCompatTable}}</div>
<h2 id="总结">总结</h2>
<p><code><font face="Open Sans, Arial, sans-serif">css伪类</font>:fullscreen应用于当前处于全屏显示模式的元素。</code> 它不仅仅选择顶级元素，还包括所有已显示的栈内元素。</p>
<div class="note">W3C标准使用不带破折号的单词:fullscreen，但Webkit和Gecko应用接口各自使用前缀带有破折号的变量：<code>:-webkit-full-screen</code> 和<code>:-moz-full-screen。</code>微软的Edge和Internet Explorer各自使用标准语法：<code>:fullscreen</code>和<code>:-ms-fullscreen。</code></div>
<h2 id="语法">语法</h2>
{{csssyntax}}
<h2 id="例子">例子</h2>
<h3 id="HTML">HTML</h3>
<pre class="brush: html"><div id="fullscreen">
<h1>:fullscreen Demo</h1>
<p> This will become a big red text when on fullscreen.</p>
<button id="fullscreen-button">Enter Fullscreen</button>
</div>
</pre>
<div class="hidden">
<h3 id="Javascript">Javascript</h3>
<pre class="brush: js">var fullscreenButton = document.getElementById("fullscreen-button");
var fullscreenDiv = document.getElementById("fullscreen");
var fullscreenFunc = fullscreenDiv.requestFullscreen;
if (!fullscreenFunc) {
['mozRequestFullScreen',
'msRequestFullscreen',
'webkitRequestFullScreen'].forEach(function (req) {
fullscreenFunc = fullscreenFunc || fullscreenDiv[req];
});
}
function enterFullscreen() {
fullscreenFunc.call(fullscreenDiv);
}
fullscreenButton.addEventListener('click', enterFullscreen);
</pre>
<h3 id="Browser-Specific_CSS">Browser-Specific CSS</h3>
<pre class="brush: css">#fullscreen:-moz-full-screen {
padding: 42px;
background-color: pink;
border:2px solid #f00;
font-size: 200%;
}
#fullscreen:-ms-fullscreen {
padding: 42px;
background-color: pink;
border:2px solid #f00;
font-size: 200%;
}
#fullscreen:-webkit-full-screen {
padding: 42px;
background-color: pink;
border:2px solid #f00;
font-size: 200%;
}
#fullscreen:-moz-full-screen > h1 {
color: red;
}
#fullscreen:-ms-fullscreen > h1 {
color: red;
}
#fullscreen:-webkit-full-screen > h1 {
color: red;
}
#fullscreen:-moz-full-screen > p {
color: DarkRed;
}
#fullscreen:-ms-fullscreen > p {
color: DarkRed;
}
#fullscreen:-webkit-full-screen > p {
color: DarkRed;
}
#fullscreen:-moz-full-screen > button {
display: none;
}
#fullscreen:-ms-fullscreen > button {
display: none;
}
#fullscreen:-webkit-full-screen > button {
display: none;
}
</pre>
</div>
<h3 id="CSS">CSS</h3>
<pre class="brush: css">#fullscreen:fullscreen {
padding: 42px;
background-color: pink;
border:2px solid #f00;
font-size: 200%;
}
#fullscreen:fullscreen > h1 {
color: red;
}
#fullscreen:fullscreen > p {
color: DarkRed;
}
#fullscreen:fullscreen > button {
display: none;
}
</pre>
<h3 id="结果">结果</h3>
<p>{{ LiveSampleLink('Example', "(If the 'Enter Fullscreen' button doesn't work, try here)") }}</p>
<p>{{ EmbedLiveSample('Example','80%','200px') }}</p>
<h2 id="特点">特点</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">特点</th>
<th scope="col">情况</th>
<th scope="col">评论</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName('Fullscreen', '#:fullscreen-pseudo-class', ':fullscreen')}}</td>
<td>{{Spec2('Fullscreen')}}</td>
<td>Initial definition</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
{{Compat("css.selectors.fullscreen")}}
<h2 id="再看看">再看看</h2>
<ul>
<li>{{cssxref("::backdrop")}}</li>
<li><a href="/en-US/docs/Web/API/Fullscreen_API">Using full-screen mode</a></li>
<li>{{ domxref("Element.requestFullscreen()") }}</li>
<li>{{ domxref("Document.exitFullscreen()") }}</li>
<li>{{ domxref("Document.fullscreen") }}</li>
<li>{{ domxref("Document.fullscreenElement") }}</li>
<li>{{HTMLAttrXRef("allowfullscreen", "iframe")}}</li>
<li>{{cssxref(":-moz-full-screen-ancestor")}}</li>
</ul>
|
