案例：Foundation案例     状态：可编辑再运行    进入竖版
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<!DOCTYPE html>
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<html>
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<head>
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  <title>Foundation 实例</title>
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  <meta charset="utf-8">
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  <meta name="viewport" content="width=device-width, initial-scale=1">
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  <link rel="stylesheet" href="/css/foundation5.5.3/foundation.min.css">
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  <script src="/js/bootstrap/jquery.min.js"></script>
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  <script src="/js/foundation5.5.3/foundation.min.js"></script>
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  <script src="/js/foundation5.5.3/modernizr.js"></script>
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</head>
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<body>
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​
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<nav class="top-bar" data-topbar>
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  <ul class="title-area">
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    <li class="name">
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      <h1><a href="#">WebSiteName</a></h1>
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    </li>
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    <!-- 小屏幕上折叠按钮: 去掉 .menu-icon 类，可以去除图标。
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      如果需要只显示图片，可以删除 "Menu" 文本 -->
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    <li class="toggle-topbar menu-icon"><a href="#"><span>Menu</span></a></li>
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  </ul>
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​
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  <section class="top-bar-section">
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    <ul class="left">
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      <li class="active"><a href="#">Home</a></li>
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      <li class="has-dropdown">
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        <a href="#">Dropdown</a>
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        <ul class="dropdown">
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          <li><label>Fruit</label></li>
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          <li><a href="#">Apple</a></li>
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          <li><a href="#">Banana</a></li>
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          <li><a href="#">Orange</a></li>
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          <li class="divider"></li>
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          <li><label>Vegetable</label></li>
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          <li><a href="#">Kale</a></li>
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          <li><a href="#">Spinach</a></li>
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        </ul>
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      </li>
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    </ul>
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  </section>
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</nav>
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​
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<div style="padding:20px;">
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  <h3>下拉菜单标签(标题)</h3>
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  <p>使用 label 元素为下拉菜单设置标签(标题)。</p>
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</div>
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​