1 DOCTYPE html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>title>
6 <style type="text/css">
7 .tudo{
8 position: relative;
9 width: 444px;
10 height: 340px;
11 background-color: pink;
12 margin: 30px auto;
13 }
14 .tudo img {
15 width: 100%;
16 height: 100%;
17 }
18 .mask {
19 /* 隐藏遮罩 */
20 display: none;
21 position: absolute;
22 top: 0;
23 left: 0;
24 width: 100%;
25 height: 100%;
26 background: rgba(0,0,0,.3) url(img/icon%20-%20副本.gif) no-repeat center;
27 }
28 .mask img{
29
30 }
31 .tudo:hover .mask{
32 /* 当鼠标经过这个盒子，遮罩显示出来 */
33 display: block;
34 }
35 style>
36 head>
37 <body>
38 <div class="tudo">
39 <img src="img/QQ图片20210407190338.jpg" alt="">
40 <div class="mask">
41 div>
42 div>
43 body>
44 html>