Code<!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">
<head>
<title>title</title>
<meta http-equiv="Content-type" content="text/html; charset=gb2312" />
<style type="text/css" media="all">
body{color:#000;background:#CCC;}
table{border-collapse:collapse;}
td{border:1px solid #000; width:50px; height:50px;}
tr:first-child td:first-child{border-color:#FFF;}
</style>
</head>
<body>
<table><tr><td>1</td><td>2</td></tr><tr><td>3</td><td>4</td></tr></table>
</body>
</html>