为什么会这样呢？
为什么会这样呢？
代码如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<style type="text/css">
*{margin: 0;padding: 0;}
.main{width: 800px;margin: 0 auto;}
.left{width: 300px;height: 500px;background-color: #ccc;position: absolute;left: 0;top: 0;}
.middle{height: 500px;background-color: red;margin: 0 200px 0 300px;}
.right{width: 200px;height: 500px;background-color: #ddd;position: absolute;right: 0;top: 0;}
</style>
</head>
<body>
<div class="main">
<div class="left"></div>
<div class="middle">fklflshfldshldshhfsdhgldgnsdlnvdlgndflgbjfdl;gldgldhsdjkhgkshslkvslkjhglksdnvlsdbsdghldnldsjsdl;j;sd;sj;sjf;ssj</div>
<div class="right"></div>
</div>
</body>
</html>
