css核心：
伪类选择器：
| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Insert a title</title> | |
| <meta charset="utf-8"> | |
| <style> | |
| table td:first-child{ | |
| background-color:yellow; | |
| } | |
| table td:last-child{ | |
| background-color:red; | |
| } | |
| table td:nth-child(3){ | |
| background-color:green; | |
| } | |
| table td:not(:first-child){ | |
| font-size:14px; | |
| font-weight:bold; | |
| color:#666; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <table border="1"> | |
| <tr> | |
| <td>孙悟空</td> | |
| <td>猪悟能</td> | |
| <td>沙悟净</td> | |
| <td>唐三藏</td> | |
| </tr> | |
| <tr> | |
| <td>贾宝玉</td> | |
| <td>林黛玉</td> | |
| <td>刘姥姥</td> | |
| <td>薛宝钗</td> | |
| </tr> | |
| <tr> | |
| <td>宋江</td> | |
| <td>鲁智深</td> | |
| <td>武松</td> | |
| <td>林冲</td> | |
| </tr> | |
| <tr> | |
| <td>刘备</td> | |
| <td>关于</td> | |
| <td>张飞</td> | |
| <td>赵云</td> | |
| </tr> | |
| </table> | |
| </body> | |
| </html> |
原文：http://www.cnblogs.com/zhangailing/p/6660256.html