2-21编程练习

来源：2-21 自由编程

weixin_慕的地2217823

2022-10-19 20:25:48

<!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>Document</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        div{
            width: 88px;
            height: 81px;
            background-image: url(images1/xin.png);
            margin: 100px auto;
        }
        .box1{
            position: relative;
        }
        .box2{
            position: absolute;
            top:-100px;
            left:0;
            opacity: 0;
            animation: xindong 1s linear 0s infinite;
        }
        @keyframes xindong{
            from{
                opacity: 1;
                transform: scale(1);
            }
            to{
                opacity: 0;
                transform: scale(2);
            }
        }
    </style>
</head>
<body>
    <div class="box1">
        <div class="box2"></div>
    </div>
   
</body>
</html>

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