元素居中 

<!doctype html> 
<html> 
<head>
<meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport">
<meta charset="utf-8"> 
<title></title> 
<style>

    #center{
        width:200px;
        height:200px;
        position:absolute;
        top:50%;
        left:50%;
        margin-top:-100px;
　　　　　background:red;
        margin-left:-100px;
    }

</style>
</head>
<body>

<div id="center"></div>

</body>
</html>

 

posted @ 2016-10-23 17:22  Panxl  阅读(102)  评论(0)  编辑  收藏  举报