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+---
+title: font-kerning
+slug: Web/CSS/font-kerning
+translation_of: Web/CSS/font-kerning
+---
+<div>{{CSSRef}}</div>
+
+<p><strong><code>font-kerning</code></strong> CSS 属性设置是否使用字体中储存的字距信息。</p>
+
+<pre class="brush:css no-line-numbers">/* Keyword values */
+font-kerning: auto;
+font-kerning: normal;
+font-kerning: none;
+
+/* Global values */
+font-kerning: inherit;
+font-kerning: initial;
+font-kerning: unset;
+</pre>
+
+<p><em>Kerning</em>（字距）定义了字母的分布情况。对于良好地规定了字距的字体，字距特性使得字母分布更为统一，阅读体验更佳。如下图所示，左侧的示例没有应用字距，而右侧使用了：</p>
+
+<p><img alt="Example of font-kerning" src="https://mdn.mozillademos.org/files/8455/font-kerning.png" style="display: block; height: 84px; margin: auto; width: 180px;"></p>
+
+<p>{{cssinfo}}</p>
+
+<h2 id="语法">语法</h2>
+
+<p><code>font-kerning</code> 属性通过以下的关键字进行指定。</p>
+
+<h3 id="值">值</h3>
+
+<dl>
+ <dt><code>auto</code></dt>
+ <dd>浏览器来决定是否使用字体字距。比如，一些浏览器会在小字体的情况下禁用字距，因为这会使得文本可读性下降。</dd>
+ <dt><code>normal</code></dt>
+ <dd>必须应用字体中的字距信息。</dd>
+ <dt><code>none</code></dt>
+ <dd>禁用字体中的字距信息。</dd>
+</dl>
+
+<h3 id="Formal_syntax">Formal syntax</h3>
+
+<pre class="syntaxbox">{{csssyntax}}</pre>
+
+<h2 id="示例">示例</h2>
+
+<h3 id="HTML">HTML</h3>
+
+<pre class="brush: html">&lt;div id="kern"&gt;&lt;/div&gt;
+&lt;div id="nokern"&gt;&lt;/div&gt;
+&lt;textarea id="input"&gt;AV T. ij&lt;/textarea&gt;</pre>
+
+<h3 id="CSS">CSS</h3>
+
+<pre class="brush: css">div {
+  font-size: 2rem;
+  font-family: serif;
+}
+
+#nokern {
+  font-kerning: none;
+}
+
+#kern {
+  font-kerning: normal;
+}</pre>
+
+<h3 id="JavaScript">JavaScript</h3>
+
+<pre class="brush: js">var input  = document.getElementById('input'),
+    kern   = document.getElementById('kern'),
+    nokern = document.getElementById('nokern');
+
+input.addEventListener('keyup', function() {
+  kern.textContent = input.value; /* Update content */
+  nokern.textContent = input.value;
+});
+
+kern.textContent = input.value; /* Initialize content */
+nokern.textContent = input.value;
+</pre>
+
+<p>{{ EmbedLiveSample('Example') }}</p>
+
+<h2 id="规格">规格</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">规格</th>
+   <th scope="col">状态</th>
+   <th scope="col">注释</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('CSS3 Fonts', '#propdef-font-kerning', 'font-kerning')}}</td>
+   <td>{{Spec2('CSS3 Fonts')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_Compatibility" name="Browser_Compatibility">浏览器兼容性</h2>
+
+<div class="hidden">该页面上的兼容性表是由结构化数据生成的。 如果你想对数据有所贡献, 请拉取<a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> 并向我们提交你的代码</div>
+
+<p>{{Compat("css.properties.font-kerning")}}</p>
+
+<h2 id="参考">参考</h2>
+
+<ul>
+ <li>{{cssxref("font-variant")}}, {{cssxref("font-variant-position")}}, {{cssxref("font-variant-east-asian")}}, {{cssxref("font-variant-caps")}}, {{cssxref("font-variant-ligatures")}}, {{cssxref("font-variant-numeric")}}, {{cssxref("font-variant-alternates")}}, {{cssxref("font-synthesis")}}, {{cssxref("letter-spacing")}}</li>
+</ul>