案例：Foundation案例     状态：可编辑再运行    进入竖版
 运行结果　
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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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​
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<body>
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​
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<form>
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  <div class="row">
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    <h2>三个相等宽度的输入框</h2>
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    <div class="medium-4 columns">
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      <label>medium-4 (100% on small, stacked)
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        <input type="text" placeholder="Name">
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      </label>
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    </div>
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​
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    <div class="medium-4 columns">
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      <label>medium-4 (100% on small, stacked)
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        <input type="text" placeholder="Name">
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      </label>
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    </div>
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​
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    <div class="medium-4 columns">
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      <label>medium-4 (100% on small, stacked)
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        <input type="text" placeholder="Name">
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      </label>
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    </div>
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  </div>
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</form>
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​
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</body>
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</html>
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​