简单教程
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<table border="1"> <colgroup span="2" style="background:red"></colgroup> <tr> <th>ISBN</th> <th>Title</th> <th>Price</th> </tr> <tr> <td>3476896</td> <td>My first HTML</td> <td>$53</td> </tr> <tr> <td>5869207</td> <td>My first CSS</td> <td>$49</td> </tr> </table> <footer>简单教程,简单编程<br/>Copyright © 简单教程 www.twle.cn</footer>
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