<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
#layout{
position: absolute;
top:20px;
left:0px;
}
#left{
background-color: #cccccc;
border:2px solid #333333;
width: 100px;
height: 300px;
position: absolute;
top:0px;
left: 0px;
}
#right{
background-color: #cccccc;
border:2px solid #333333;
width:100px;
height: 300px;
position: absolute;
right: 0px;
top:0px;
}
#center{
background-color: #cccccc;
border: 2px solid #333333;
height: 300px;
margin-left: 104px;
margin-right: 104px;
}
body{
margin: 0px;
padding:0px;
}
</style>
</head>
<body>
<div id="left">左列</div>
<div id="center">中列</div>
<div id="right">右列</div>
</body>
</html>