定义表格各列的样式，不用每个td都在那里加一堆的Class，利用th,colgroup,col等属性，轻松搞定^_^
代码如下：
复制代码 代码如下:
<style>
table.Demo {
  border-collapse: collapse;
  color: #454545;
  font: 11px/150% Verdana, Arial, Helvetica, sans-serif;
}
table.Demo th {
  padding: 3px 7px;
  border: 1px solid #f60;
  border-width: 2px 1px 1px;
  background: #ffffe1;
}
table.Demo td {
  padding: 3px 7px;
  border: 1px solid #f60;
}
table.Demo col.Col1 {
  text-align: right;
  background: #f5f5f5;
}
table.Demo col.Col2 {
  color: #00c;
}
table.Demo col.Col3 {
  font-style: italic;
}
</style>
<table class="Demo">
  <tr>
    <th>TagName</th>
    <th>ClassName</th>
    <th>CSS</th>
  </tr>
  <colgroup>
    <col class="Col1" />
    <col class="Col2" />
    <col class="Col3" />
  </colgroup>
  <tr>
    <td>table</td>
    <td>Demo</td>
    <td>border-collapse: collapse;<br />color: #454545;<br />font: 11px/150% Verdana, Arial, Helvetica, sans-serif;</td>
  </tr>
  <tr>
    <td>th</td>
    <td></td>
    <td>padding: 3px 7px;<br />border: 1px solid #f60;<br />border-width: 2px 1px 1px;<br />background: #ffffe1;</td> 
  </tr>
  <tr>
    <td>td</td>
    <td></td>
    <td>padding: 3px 7px;<br />border: 1px solid #f60;</td>
  </tr>
  <tr>
    <td>col</td>
    <td>Col1</td>
    <td>text-align: right;<br />background: #f5f5f5;</td>
  </tr>
  <tr>
    <td>col</td>
    <td>Col2</td>
    <td>color: #00c;</td>
  </tr>
  <tr>
    <td>col</td>
    <td>Col3</td>
    <td>font-style: italic;</td>
  </tr>
</table>

抛砖引玉，更多效果就由你DIY了！
<style> table.Demo { border-collapse: collapse; color: #454545; font: 11px/150% Verdana, Arial, Helvetica, sans-serif; } table.Demo th { padding: 3px 7px; border: 1px solid #f60; border-width: 2px 1px 1px; background: #ffffe1; } table.Demo td { padding: 3px 7px; border: 1px solid #f60; } table.Demo col.Col1 { text-align: right; background: #f5f5f5; } table.Demo col.Col2 { color: #00c; } table.Demo col.Col3 { font-style: italic; } </style> <th>TagName</th> <th>ClassName</th> <th>CSS</th> <colgroup> <col class="Col1" /> <col class="Col2" /> <col class="Col3" /> </colgroup> table Demo border-collapse: collapse;color: #454545;font: 11px/150% Verdana, Arial, Helvetica, sans-serif; th padding: 3px 7px;border: 1px solid #f60;border-width: 2px 1px 1px;background: #ffffe1; td padding: 3px 7px;border: 1px solid #f60; col Col1 text-align: right;background: #f5f5f5; col Col2 color: #00c; col Col3 font-style: italic;
[Ctrl+A 全选 注:引入外部Js需再刷新一下页面才能执行]