W3School TIY
编辑您的代码：
<html> <body> <table width="100%" border="1"> <colgroup span="2" align="left"></colgroup> <colgroup align="right" style="color:#0000FF;"></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>2489604</td> <td>My first CSS</td> <td>$47</td> </tr> </table> </body> </html>
查看结果: