背景透明度 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        #bigbox{
            width: 200px;
            height:200px;
            background:red;
        }
        #box{
            width: 100px;
            height:200px;
            filter:alpha(opacity=80);
            opacity:0.8;
            float:left;
            border:2px solid blue;
            background:#666;
        }
    </style>
</head>
<body>
<div id="bigbox">
    <div id="box"></div>
</div>
</body>
</html>

 

posted @ 2016-05-06 10:38  Jinsuo  阅读(254)  评论(0)  编辑  收藏  举报