files/zh-cn/web/css/border-top-color/index.html


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---
title: border-top-color
slug: Web/CSS/border-top-color
tags:
  - CSS
  - CSS Borders
  - CSS属性
translation_of: Web/CSS/border-top-color
---
<div>{{CSSRef}}</div>

<p><strong><code>border-top-color</code></strong> 属性用以设置某元素顶部 {{cssxref("border")}}的颜色。通常，用{{cssxref("border-color")}} 或 {{cssxref("border-top")}} 设置该颜色更为便捷可取。</p>

<div>{{EmbedInteractiveExample("pages/css/border-top-color.html")}}</div>


<h2 id="语法">语法</h2>

<pre class="brush: css no-line-numbers  language-css">/* &lt;color&gt; values */
border-top-color: red;
border-top-color: #ffbb00;
border-top-color: rgb(255, 0, 0);
border-top-color: hsla(100%, 50%, 25%, 0.75);
border-top-color: currentColor;
border-top-color: transparent;

/* Global values */
border-top-color: inherit;
border-top-color: initial;
border-top-color: unset;
</pre>

<p><code>border-top-color</code> 属性的值为单值。</p>

<h3 id="值">值</h3>

<dl>
 <dt>{{cssxref("&lt;color&gt;")}}</dt>
 <dd>上边框的颜色。</dd>
</dl>

<h3 id="规范语法">规范语法</h3>

{{csssyntax}}

<h2 id="示例">示例</h2>

<h3 id="一个简单的带边框容器">一个简单的带边框容器</h3>

<h4 id="HTML">HTML</h4>

<pre class="brush: html">&lt;div class="mybox"&gt;
  &lt;p&gt;This is a box with a border around it.
     Note which side of the box is
     &lt;span class="redtext"&gt;red&lt;/span&gt;.&lt;/p&gt;
&lt;/div&gt;</pre>

<h4 id="CSS">CSS</h4>

<pre class="brush: css">.mybox {
  border: solid 0.3em gold;
  border-top-color: red;
  width: auto;
}

.redtext {
  color: red;
}</pre>

<h4 id="结果">结果</h4>

<p>{{EmbedLiveSample('A_simple_div_with_a_border')}}</p>

<h2 id="Specifications">Specifications</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 Backgrounds', '#border-top-color', 'border-top-color')}}</td>
   <td>{{Spec2('CSS3 Backgrounds')}}</td>
   <td>No significant changes, though the <code>transparent</code> keyword, now included in {{cssxref("&lt;color&gt;")}} which has been extended, has been formally removed.</td>
  </tr>
  <tr>
   <td>{{SpecName('CSS2.1', 'box.html#border-color-properties', 'border-top-color')}}</td>
   <td>{{Spec2('CSS2.1')}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>

<p>{{cssinfo}}</p>

<h2 id="浏览器兼容性">浏览器兼容性</h2>


<p>{{Compat("css.properties.border-top-color")}}</p>

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

<ul>
 <li>The border-related CSS shorthand properties: {{Cssxref("border")}}, {{Cssxref("border-top")}}, and {{Cssxref("border-color")}}.</li>
 <li>The color-related CSS properties for the other borders: {{Cssxref("border-right-color")}}, {{Cssxref("border-bottom-color")}}, and {{Cssxref("border-left-color")}}.</li>
 <li>The other border-related CSS properties applying to the same border: {{cssxref("border-top-style")}} and {{cssxref("border-top-width")}}.</li>
</ul>