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---
title: CSS Positioning
slug: Web/CSS/CSS_Positioning
translation_of: Web/CSS/CSS_Positioning
---
<p>{{CSSRef}}</p>
<p><strong>CSS Positioning</strong> 是一个CSS模块，用来定义如何将元素在页面中进行绝对定位和相对定位。</p>
<h2 id="参考">参考</h2>
<h3 id="CSS_属性">CSS 属性</h3>
<div class="index">
<ul>
<li>{{cssxref("bottom")}}</li>
<li>{{cssxref("clear")}}</li>
<li>{{cssxref("display")}}</li>
<li>{{cssxref("float")}}</li>
<li>{{cssxref("left")}}</li>
<li>{{cssxref("position")}}</li>
<li>{{cssxref("right")}}</li>
<li>{{cssxref("top")}}</li>
<li>{{cssxref("visibility")}}</li>
<li>{{cssxref("z-index")}}</li>
</ul>
</div>
<h2 id="向导">向导</h2>
<dl>
<dt><a href="/en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index">理解 CSS z-index</a></dt>
<dd>通过几个例子来展现上下文叠加的概念以及解释z-ordering是如何工作的.</dd>
</dl>
<h2 id="规范">规范</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">规范</th>
<th scope="col">状态</th>
<th scope="col">注释</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{ SpecName('CSS3 Positioning') }}</td>
<td>{{ Spec2('CSS3 Positioning') }}</td>
<td> </td>
</tr>
<tr>
<td>{{ SpecName('CSS2.1', 'visuren.html') }}</td>
<td>{{ Spec2('CSS2.1') }}</td>
<td> </td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<p>{{CompatibilityTable}}</p>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>性能</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari (WebKit)</th>
</tr>
<tr>
<td>Basic support</td>
<td>1.0</td>
<td>{{ CompatGeckoDesktop("1") }}</td>
<td>5.0</td>
<td>6.0</td>
<td>1.0 (85)</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td>1.0</td>
<td>{{ CompatGeckoMobile("1") }}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{CompatVersionUnknown}}</td>
</tr>
</tbody>
</table>
</div>
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