使用:nth-child(even)选择表格中的偶数行，进行修改背景色，如果选择奇数行，使用odd选择奇数。
使用:last-of-type选择最后一个元素进行画表格底线
使用colspan进行行合并
使用rowspan进行列合并
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" " http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns=" http://www.w3.org/1999/xhtml">
<meta http-equiv="Content-Type" content="text/htmlcharset=utf-8" />
<title>无标题文档</title><html>
<head>
<style type="text/css">
<!--
.BG {border: 1px solid #FFCC00<br>}
.BG1 {border: 1px dashed #CCCCCC<br>}
.BG2 {border: 1px inset #3399CC<br>}
.BG3 {border-top-width: 1px<br>border-right-width: 1px<br>border-bottom-width: 1px<br>border-left-width: 1px<br>border-top-style: dotted<br>border-right-style: solid<br>border-bottom-style: double<br>border-left-style: outset<br>border-top-color: #999999<br>border-right-color: #FF9900<br>border-bottom-color: #CC9999<br>border-left-color: #99CC00<br>}
.BG4 {border-top-width: 1px<br>border-right-width: 1px<br>border-bottom-width: 1px<br>border-left-width: 1px<br>border-top-style: dashed<br>border-right-style: none<br>border-bottom-style: dashed<br>border-left-style: none<br>border-top-color: #FFCC00<br>border-right-color: #FFCC00<br>border-bottom-color: #FFCC00<br>border-left-color: #FFCC00<br>}
-->
</style>
</head>
<body>
<table width="300" border="0" cellpadding="0" cellspacing="0" class="BG">
<tr>
<td bgcolor="#FFFF99"><div align="center">模拟百度的表格</div></td>
</tr>
<tr>
<td></td>
</tr>
</table>
<p></p>
<table width="300" border="0" cellpadding="0" cellspacing="0" class="BG1">
<tr>
<td bgcolor="#CCCCCC"><div align="center">模拟很多BLOG表格</div></td>
</tr>
<tr>
<td></td>
</tr>
</table>
<p></p>
<table width="300" border="0" cellpadding="0" cellspacing="0" class="BG2">
<tr>
<td><div align="center">新款式表格</div></td>
</tr>
<tr>
<td></td>
</tr>
</table>
<p></p>
<table width="300" border="0" cellpadding="0" cellspacing="0" class="BG3">
<tr>
<td><div align="center">花式表格</div></td>
</tr>
<tr>
<td></td>
</tr>
</table>
<p></p>
<table width="300" border="0" cellpadding="0" cellspacing="0" class="BG4">
<tr>
<td><div align="center">去任意边表格</div></td>
</tr>
<tr>
<td></td>
</tr>
</table>
<p></p>
<p></p>
<p></p>
</body>
</html>
整个页面的，复制看看把
