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+---
+title: '::-moz-progress-bar'
+slug: 'Web/CSS/::-moz-progress-bar'
+tags:
+  - CSS
+  - CSS 伪类
+  - 非标准特性
+translation_of: 'Web/CSS/::-moz-progress-bar'
+---
+<div>{{CSSRef}}{{Non-standard_header}}</div>
+
+<p><a href="/en-US/docs/Web/CSS">CSS</a><a href="/en-US/docs/Web/CSS/Pseudo-elements">伪元素</a> <strong><code>::-moz-progress-bar</code></strong> 是{{HTMLElement("progress")}} 元素中，Mozilla独有的特性（<a href="/en-US/docs/Web/CSS/Mozilla_Extensions">Mozilla extension</a>），用于对进度条完成的部分进行选择。</p>
+
+<p>如果你想选择未完成的部分，请直接选择 {{HTMLElement("progress")}} 。</p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox notranslate">{{csssyntax}}</pre>
+
+<h2 id="例子">例子</h2>
+
+<h3 id="HTML">HTML</h3>
+
+<pre class="brush:html; notranslate">&lt;progress value="30" max="100"&gt;30%&lt;/progress&gt;
+&lt;progress max="100"&gt;Indeterminate&lt;/progress&gt;</pre>
+
+<h3 id="CSS">CSS</h3>
+
+<pre class="brush: css notranslate">::-moz-progress-bar {
+  background-color: red;
+}
+
+/* Force indeterminate bars to have zero width */
+:indeterminate::-moz-progress-bar {
+  width: 0;
+}</pre>
+
+<h3 id="Result">Result</h3>
+
+<p>{{EmbedLiveSample('Examples')}}</p>
+
+<p>上面第一段样式的进度条会如下图所示：</p>
+
+<p><img alt="Custom styled progress bar" class="default internal" src="/@api/deki/files/5387/=redbar.png"></p>
+
+<h2 id="参考">参考</h2>
+
+<ul>
+ <li>{{HTMLElement("progress")}}</li>
+ <li>{{ cssxref("::-ms-fill") }}</li>
+ <li>{{ cssxref("::-webkit-progress-bar") }}</li>
+ <li>{{ cssxref("::-webkit-progress-value") }}</li>
+ <li>{{ cssxref("::-webkit-progress-inner-element") }}</li>
+</ul>