案例:html/html5 案例     状态:可编辑再运行    进入竖版
 运行结果 
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<html>
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<body>
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<table width="100%" border="1">
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  <col align="left" />
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  <col align="left" />
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  <col align="right" />
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  <tr>
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    <th>ISBN</th>
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    <th>Title</th>
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    <th>Price</th>
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  </tr>
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  <tr>
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    <td>3476896</td>
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    <td>My first HTML</td>
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    <td>$53</td>
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  </tr>
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  <tr>
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    <td>2489604</td>
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    <td>My first CSS</td>
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    <td>$47</td>
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  </tr>
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</table>
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</body>
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</html>