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---
title: hover
slug: Web/CSS/@media/hover
tags:
  - '@media'
  - CSS
  - Reference
  - media feature
translation_of: Web/CSS/@media/hover
---
<div>{{cssref}}</div>

<p><strong><code>hover</code></strong> <a href="/en-US/docs/CSS">CSS</a> {{cssxref("@media")}} 可以根据用户的主要输入机制是否可以悬停在元素之上来应用样式。</p>

<h2 id="语法">语法</h2>

<p>悬停功能指定为从下面列表中选择的关键字值。</p>

<dl>
 <dt><code>none</code></dt>
 <dd>主要输入机制无法悬停或不方便悬停(例如,当用户执行不方便的长按操作时,许多移动设备模拟悬停),或者没有主指示输入机制。</dd>
 <dt><code>hover</code></dt>
 <dd>主要输入机制可以方便地悬停在元素上。</dd>
</dl>

<h2 id="例子">例子</h2>

<h3 id="HTML">HTML</h3>

<pre class="brush: html">&lt;a href="#"&gt;Try hovering over me!&lt;/a&gt;</pre>

<h3 id="CSS">CSS</h3>

<pre class="brush: css">@media (hover: hover) {
  a:hover {
    background: yellow;
  }
}</pre>

<h3 id="结果">结果</h3>

<p>{{EmbedLiveSample("Example")}}</p>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td>{{SpecName('CSS4 Media Queries', '#hover', 'hover')}}</td>
   <td>{{Spec2('CSS4 Media Queries')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="Browser_compatibility" name="Browser_compatibility">浏览器兼容性</h2>



<p>{{Compat("css.at-rules.media.hover")}}</p>

<h2 id="See_also">See also</h2>

<ul>
 <li><a href="/en-US/docs/Web/CSS/@media/any-hover">the <code>any-hover</code> media feature</a></li>
</ul>