HTML代码:
<html>
<head><title>一列固定宽度居中</title>
<link rel = "stylesheet" type="text/css" href = "layout.css">
</head>
<body>
<div id ="layout"></div>
</body>
</html>css代码:
#layout{
background-color:#cccccc;
border:2px solid#333333;
width:80%;
height:500px;
margin:0 auto;
}