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+---
+title: '::marker'
+slug: 'Web/CSS/::marker'
+translation_of: 'Web/CSS/::marker'
+---
+<div>{{CSSRef}}</div>
+
+<p><span class="seoSummary"><strong><code>::marker</code></strong> <a href="/en-US/docs/Web/CSS">CSS</a> <a href="/en/CSS/Pseudo-elements">pseudo-element</a>（CSS伪元素） 选中一个list item的marker box，后者通常含有一个项目符号或者数字。</span>它作用在任何设置了<code><a href="/en-US/docs/Web/CSS/display">display: list-item</a></code>的元素或伪元素上，例如{{HTMLElement("li")}}和{{HTMLElement("summary")}}。</p>
+
+<pre class="brush: css no-line-numbers notranslate">::marker {
+  color: blue;
+  font-size: 1.2em;
+}</pre>
+
+<h2 id="允许的属性值">允许的属性值</h2>
+
+<p><span class="tlid-translation translation" lang="zh-CN"><span title="">在将</span></span><code>::marker</code><span class="tlid-translation translation" lang="zh-CN"><span title="">作为选择器的规则中，只能使用某些CSS属性：</span></span></p>
+
+<ul>
+ <li>All <a href="/en-US/docs/Web/CSS/CSS_Fonts">font properties</a>（字体属性）</li>
+ <li>{{CSSxRef("color")}}</li>
+ <li>{{CSSxRef("text-combine-upright")}}, {{CSSxRef("unicode-bidi")}} and {{CSSxRef("direction")}} properties</li>
+ <li>The {{CSSxRef("content")}} property</li>
+</ul>
+
+<div class="blockIndicator note">
+<p><span class="tlid-translation translation" lang="zh-CN"><span title="">规范指出，将来可能会支持其他CSS属性。</span></span></p>
+</div>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox notranslate">{{CSSSyntax}}</pre>
+
+<h2 id="示例">示例</h2>
+
+<h3 id="HTML">HTML</h3>
+
+<pre class="brush: html notranslate">&lt;ul&gt;
+  &lt;li&gt;Peaches&lt;/li&gt;
+  &lt;li&gt;Apples&lt;/li&gt;
+  &lt;li&gt;Plums&lt;/li&gt;
+&lt;/ul&gt;</pre>
+
+<h3 id="CSS">CSS</h3>
+
+<pre class="brush: css notranslate">ul li::marker {
+  color: red;
+  font-size: 1.5em;
+}</pre>
+
+<h3 id="Result">Result</h3>
+
+<p>{{EmbedLiveSample('示例')}}</p>
+
+<h2 id="标准">标准</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 Pseudo-Elements', '#marker-pseudo', '::marker')}}</td>
+   <td>{{Spec2('CSS4 Pseudo-Elements')}}</td>
+   <td>No significant change.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('CSS3 Lists', '#marker-pseudo', '::marker')}}</td>
+   <td>{{Spec2('CSS3 Lists')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<div>
+
+
+<p>{{Compat("css.selectors.marker")}}</p>
+</div>
+
+<h2 id="参见">参见</h2>
+
+<ul>
+ <li>默认拥有marker boxes的HTML元素：{{HTMLElement("ol")}}，{{HTMLElement("li")}}，{{HTMLElement("summary")}}</li>
+</ul>