图片显示如下：
代码如下：
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<style type="text/css">
#f {
margin: 15px;
border: 1px solid #000;
background-color: #9FF;
}
table {
background-color: #F09;
}
</style>
</head>
<body>
<table width="50%" border="1" align="center">
<tr>
<td id="f"> </td>
</tr>
</table>
</body>
</html>
