实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
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<!DOCTYPE html>
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<html>
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<body>
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​
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<table border="1">
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  <colgroup>
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    <col span="2" style="background-color:red">
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    <col style="background-color:yellow">
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  </colgroup>
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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>5869207</td>
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    <td>My first CSS</td>
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    <td>$49</td>
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  </tr>
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</table>
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​
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</body>
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</html>
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