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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
</HEAD>
<style>
.container{
display:table;
width:600px;
background:#ff6600;
margin:0px;
padding-top:0;
padding-right:0;
padding-bottom:0;
padding-left:0;
}
.leftbox{
width:300px;
background:#f00;
float:left;
height:100%;
}
.rightbox{
width:300px;
height:100%;
background:#c90;
float:right;
}
</style>
<BODY>
<div class="container">
<div class="leftbox">
就何必何必何必何必何必何必何必何必何必何必
</div>
<div class="rightbox">
必何必何必何必何必何必何必何必何必何必何必何必何必必何必何必何必何必何必何必何必何必何必何必何必何必何必何必何必必何必何必何
</div>
</BODY>
</HTML>
<!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">
<!--
.main{
width:600px;
overflow:hidden;
}
.left{
background:#999999;
margin-bottom:-10000px;
padding-bottom:10000px;
width:200px;
float:left;
color:#FF0000;
}
.center{
background:#333333;
margin-bottom:-10000px;
padding-bottom:10000px;
width:200px;
float:left;
color:#FF0000;
}
.right{
background:#0000FF;
margin-bottom:-10000px;
padding-bottom:10000px;
width:200px;
float:left;
}
.bottom{
width:600px;
background:#CC00CC;
color:#000000;
height:100px;
}
-->
</style>
</head>
<body>
<div class="main">
<div class="left">left</div>
<div class="center">center<br />center<br />center<br />center<br />center<br />center<br />center<br /></div>
<div class="right">right</div>
</div>
<div class="bottom">bottom</div>
</body>
</html>
<style type="text/css">
#leftbox{float:left;width:200px; background-color:#FF0000;}
#midbox{float:left;width:200px;background-color:#FFFF00}
.bottom{display:block;clear:both;margin-top:50px;background:#000000;width:300px;height:200px;color:#FFF;}
</style>
<div id="leftbox">22</div>
<div id="midbox">左边的内容左边的内容左边的内容左边的内容左边的内容左边的内容左边的内容</div>
<script>
if(midbox.offsetHeight>leftbox.offsetHeight)
leftbox.style.height=midbox.offsetHeight+"px";
else
midbox.style.height=leftbox.offsetHeight+"px";
</script>
<div class="bottom">sssssssssssss</div>