<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>CSS3:透明度</title>
    <style type="text/css">
        div{
            width:100px;
            height:100px;
            margin: 40px;
            display: inline-block;
            background-color: #ee3e80;}
        p{
            width: 100px;
            height: 100px;
            position: relative;
            top: 20px;
            left: 20px;
            margin:20px;}
        p.one {
            background-color: rgb(0,0,0);
            opacity: 0.5;}
        p.two {
            background-color: rgb(0,0,0);
            background-color: rgba(0,0,0,0.5);}
    </style>
</head>
<body>
<div><p class="one"></p></div>
<div><p class="two"></p></div>
</body>
</html>

　　

版权声明：本文为max-hou原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接和本声明。
本文链接：https://www.cnblogs.com/max-hou/p/8537408.html