伪元素选择器使用场景2-仿土豆网显示隐藏遮罩案例(CSS3)

快来打我* 2023-10-03 13:32 1阅读 0赞

## 伪元素选择器使用场景2-仿土豆网显示隐藏遮罩案例(CSS3) ##

<!DOCTYPE html>
    <html lang="en">
    
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>伪元素选择器使用场景2-仿土豆网显示隐藏遮罩案例</title>
        <style>
            .tudou {
        
                position: relative;
                width: 444px;
                height: 320px;
                background-color: pink;
                margin: 30px auto;
            }
    
            .tudou img {
        
                width: 100%;
                height: 100%;
            }
    
            .tudou::before {
        
                content: '';
                /* 隐藏遮罩层 */
                display: none;
                position: absolute;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, .4) url(images/arr.png) no-repeat center;
            }
    
            /* 当我们鼠标经过了 土豆这个盒子，就让里面before遮罩层显示出来 */
            .tudou:hover::before {
        
                /* 而是显示元素 */
                display: block;
            }
        </style>
    </head>
    
    <body>
        <div class="tudou">
            <img src="images/tudou.jpg" alt="">
        </div>
        <div class="tudou">
            <img src="images/tudou.jpg" alt="">
        </div>
        <div class="tudou">
            <img src="images/tudou.jpg" alt="">
        </div>
        <div class="tudou">
            <img src="images/tudou.jpg" alt="">
        </div>
    </body>
    
    </html>