两个设定宽度和高度的div 第一个设置float:left 下面的div就消失了
<!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">
.div1{
width:100px;
height:100px;
background:#900;
float:left;
}
.div2{
width:100px;
height:100px;
background:#00F;
}
</style>
</head>
<body>
<div class="div1">box1</div>
<div class="div2">box2</div>
</body>
</html>
