土豆网遮罩--display:block显示（不占位） 

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>土豆网遮罩</title>
    <style>
        .box {
            position: relative;
            width: 448px;
            height: 252px;
            margin: 100px auto;
        }
        
        img {
            width: 100%;
            height: 100%;
        }
        
        .mask {
            display: none;
            position: absolute;
            top: 0;
            left: 0;
            width: 448px;
            height: 252px;
            background-color: rgba(0, 0, 0, .3);
            /* 这样就不用弄个i再插入图片了；background: rgba(0, 0, 0, .4) url(images/arr.png) no-repeat center; */
        }
        
        .mask i {
            position: absolute;
            top: 50%;
            margin-top: -17px;
            left: 50%;
            margin-left: -17px;
        }
        /* 下面这个重要的 */
        /* 经过盒子，而不是a呢 */
        
        .box:hover .mask {
            display: block;
        }
    </style>
</head>

<body>
    <div class="box">
        <a href="#"><img src="tudou.jpg" alt=""></a>
        <div class="mask">
            <i><img src="arr.png" alt=""></i>
        </div>
    </div>
</body>

</html>
posted @ 2021-03-26 13:59  ice猫猫3  阅读(69)  评论(0)  编辑  收藏  举报