---
title: Media queries
slug: Web/CSS/Media_Queries
translation_of: Web/CSS/Media_Queries
---
<div>{{CSSRef}}</div>

<p><strong>Media Queries</strong> is a module of CSS that defines expressions allowing to tailor presentations to a specific range of output devices without changing the content itself.</p>

<h2 id="參考">參考</h2>

<h3 id="At-rules">At-rules</h3>

<div class="index">
<ul>
 <li>{{cssxref("@import")}}</li>
 <li>{{cssxref("@media")}}</li>
</ul>
</div>

<h2 id="指南">指南</h2>

<dl>
 <dt><a href="/en-US/docs/Web/CSS/Media_Queries/Using_media_queries">Using media queries</a></dt>
 <dd>Presents what media queries are doing and explains the possible expressions.</dd>
 <dt><a href="/en-US/docs/Web/CSS/Media_Queries/Testing_media_queries">Testing media queries</a></dt>
 <dd>Explains how to test a media query programmatically, from JavaScript.</dd>
</dl>

<h2 id="規範">規範</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('CSS3 Conditional')}}</td>
   <td>{{Spec2('CSS3 Conditional')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('CSS4 Media Queries')}}</td>
   <td>{{Spec2('CSS4 Media Queries')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('CSS3 Media Queries')}}</td>
   <td>{{Spec2('CSS3 Media Queries')}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName('CSS2.1', 'media.html')}}</td>
   <td>{{Spec2('CSS2.1')}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>