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+---
+title: height
+slug: Web/CSS/@viewport/height
+translation_of: Web/CSS/@viewport
+---
+<div>{{CSSRef}}</div>
+
+<h2 id="概要">概要</h2>
+
+<p><font face="Consolas, Liberation Mono, Courier, monospace"><strong>高度 </strong></font>的 CSS 描述符是用於設定兩者的簡易描述符 {{cssxref("@viewport/min-height", "min-height")}} 與 {{cssxref("@viewport/max-height", "max-height")}} 的可視區域(viewport)。提供一個可視區域的長度值，將設定兩者的最小高度與最大高度的值。</p>
+
+<p>如果提供了兩個可視區域(viewport)，第一個值將設定為最小高度，而第二個值將設定為最大高度。</p>
+
+<h2 id="語法">語法</h2>
+
+<pre class="brush: css">/* One value */
+height: auto;
+height: 320px;
+height: 15em;
+
+/* Two values */
+height: 320px 200px;
+</pre>
+
+<h3 id="值">值</h3>
+
+<dl>
+ <dt><code>auto</code></dt>
+ <dd>使用 CSS 描述符來進行值的計算。</dd>
+ <dt><code>&lt;length&gt;</code></dt>
+ <dd>非負絕對值或相對長度。</dd>
+ <dt><code>&lt;percentage&gt;</code></dt>
+ <dd>初始可視區域的相對寬度或相對高度百分比的縮放係數為 1.0，且必須是非負數。</dd>
+</dl>
+
+<h3 id="正式語法">正式語法</h3>
+
+<pre class="syntaxbox">{{csssyntax}}
+</pre>
+
+<h2 id="舉例">舉例</h2>
+
+<pre class="brush: css">@viewport {
+  height: 500px;
+}</pre>
+
+<h2 id="格式">格式</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 Device', '#descdef-viewport-height', '"height" descriptor')}}</td>
+   <td>{{Spec2('CSS3 Device')}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="瀏覽器兼容性">瀏覽器兼容性</h2>
+
+<p>{{CompatibilityTable}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>29 (behind a flag)</td>
+   <td>{{CompatNo}}</td>
+   <td>10 {{property_prefix("-ms")}}</td>
+   <td>11.10<br>
+    Removed in 15<br>
+    Reintroduced behind a flag in 16</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Chrome for 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>4.4</td>
+   <td>29</td>
+   <td>{{CompatNo}}</td>
+   <td>10{{property_prefix("-ms")}}</td>
+   <td>11.10<br>
+    Removed in 15<br>
+    Reintroduced behind a flag in 16</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>