<!doctype html>
<html>
<head>
<title>子元素设置margin-top，父元素也受影响</title>
</head>
<style type="text/css">
* {
margin: 0px;
padding: 0px;
}
.father {
width: 500px;
height: 800px;
background: #ccc;
cursor: pointer;
/*第一种padding-top: 1px;常用*/
/*第二种border: 1px solid red(transparent);可用*/
/*第三种父元素设置overflow: hidden;*/
}
.son {
width: 450px;
height: 600px;
margin-top: 200px;
}
</style>
<body>
<div class="father">
<div class="son">
<img src="7v/1318240446520.jpg"/>
</div>
</div>
</body>
</html>
原文：http://www.cnblogs.com/12606huchao/p/4875908.html