<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="css/main.css">
</head>
<body>
<div id="header">头部</div>
<div id="container">
<div class="mainBox">
内容区域
<p>我说情爱的请大赛撒谎和大嫂多少</p>
<p>hsdaufhsalfsa</p>
<p>shhsaldhsakl</p>
<p>我说情爱的请大赛撒谎和大嫂多少</p>
<p>hsdaufhsalfsa</p>
<p>shhsaldhsakl</p>
<p>我说情爱的请大赛撒谎和大嫂多少</p>
<p>hsdaufhsalfsa</p>
<p>shhsaldhsakl</p>
<p>我说情爱的请大赛撒谎和大嫂多少</p>
<p>hsdaufhsalfsa</p>
<p>shhsaldhsakl</p>
<p>我说情爱的请大赛撒谎和大嫂多少</p>
<p>hsdaufhsalfsa</p>
</div>
<div class="sideBox">
侧边栏
<span>把手</span>
</div>
</div>
<div id="footer">底部</div>
</body>
</html>
body{
padding: 0px;
margin: 0px;
}
#header,#footer{
height: 50px;
background-color: #e9e9e9;
}
#container{
position: relative;
overflow: hidden;
margin: 10px 0px;
}
#container:after{
display: block;
content: "";
line-height: 0px;
font-size: 0px;
clear: both;
visibility: hidden;
}
.mainBox{
margin-left: 320px;
background-color: green;
width: auto;
color: white;
}
.sideBox{
width: 300px;
height: 500px;
position: absolute;
left: 0px;
top: 0px;
background: #;
}
.sideBox span{
background: red;
color: white;
right: 0px;
position: absolute;
top: %;
width: 30px;
height: 50px;
text-align: center;
}
要想两列等高一般采用js进行计算设置，如果采用css则可以使用背景填充办法，或者背景色填充办法，但都不是太好