案例:Bootstrap案例     状态:可编辑再运行    进入横版
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<!DOCTYPE html>
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<html>
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<head>
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    <meta charset="utf-8"> 
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    <title>Bootstrap Example</title>
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    <meta name="viewport" content="width=device-width, initial-scale=1">
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    <link rel="stylesheet" href="/css/bootstrap/bootstrap3.3.7.min.css">  
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    <script src="/js/bootstrap/jquery.min.js"></script>
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    <script src="/js/bootstrap/bootstrap3.3.7.min.js"></script>
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</head>
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<body>
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<div class="container">
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    <h2>Button</h2>
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    <p> .btn 类是按钮的基本样式:</p>
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    <button type="button" class="btn">基本按钮</button>
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</div>
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</body>
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</html>

 运行结果 
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