关于width 设置px 或者%的问题
第5章 用HTML+CSS实现复杂结构的混合布局
5-3 编程挑战
中:
<!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>混合布局编程挑战</title>
<style type="text/css">
body{ margin:0; padding:0; font-size:30px; color:#fff}
.top{height:100px;background:gray;}
.main{height:600px;background:red;}
.right{height:600px;background:green;margin:0 0 0 210px;}
.left{height:600px;width:200px;background:blue;position:absolute;top:100px;left:0;}
.foot{height:50px;background:orange;}
</style>
</head>
<body>
<div class="top">top</div>
<div class="main">
<div class="right">right</div>
<div class="left">left</div>
</div>
<div class="foot">foot</div>
</body>
</html>
为什么不能写成height:100%;?