<html><head><style>table { border-collapse: collapse;}table, td, th { border: 1px solid black;}</style></head><body><h2>Let the borders collapse:</h2><table> <tr> <th>Firstname</th> <th>Lastname</th> </tr> <tr> <td>Peter</td> <td>Griffin</td> </tr> <tr> <td>Lois</td> <td>Griffin</td> </tr></table><p><b>注意：</b> 如果未指定 !DOCTYPE，border-collapse 属性会在 IE8 和更早版本中产生意外结果。</p></body></html>