案例：ionic案例     状态：可编辑再运行    进入竖版
 运行结果　
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<html ng-app="ionicApp">
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    <head>
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        <meta charset="utf-8">
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        <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no, width=device-width">
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        <title>W3xue教程(w3xue.com)</title>
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        <link href="https://cdn.bootcss.com/ionic/1.3.2/css/ionic.css" rel="stylesheet">
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        <script src="https://cdn.bootcss.com/ionic/1.3.2/js/ionic.bundle.min.js"></script>
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    </head>
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    <body>
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     <!-- 头部按钮栏 -->
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    <div class="bar bar-header">
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      <div class="bar bar-header">
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        <div class="button-bar">
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          <a class="button activated">First</a>
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          <a class="button">Second</a>
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          <a class="button">Third</a>
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        </div>
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      </div>
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    </div>
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​
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    <!-- 内容页上的按钮栏 -->
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    <div class="content has-header padding">
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      <p>
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        </p><div class="button-bar bar-light">
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          <a class="button">First</a>
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          <a class="button">Second</a>
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          <a class="button">Third</a>
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        </div>
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      <p></p>
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      <p>
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        </p><div class="button-bar bar-stable">
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          <a class="button">First</a>
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          <a class="button">Second</a>
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          <a class="button">Third</a>
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        </div>
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      <p></p>
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      <p>
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        </p><div class="button-bar bar-positive">
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          <a class="button">First</a>
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          <a class="button">Second</a>
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          <a class="button">Third</a>
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        </div>
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      <p></p>
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      <p>
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        </p><div class="button-bar bar-calm">
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          <a class="button">First</a>
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          <a class="button">Second</a>