2-21,麻烦老师检查一下！

来源：2-21 自由编程

脑袋瓜瓜嗡嗡的

2022-05-13 01:29:27

<!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(img/xin.png);
        }
        div.fa{
            position: relative;
            margin: 100px auto;
        }
        div.son{
            position: absolute;
            top: 0;
            left: 0;
            animation: heartBeat 1s linear 0s infinite;
        }
        @keyframes heartBeat{
            from{
                transform: scale(1);
                opacity: 1;
            }
            to{
                transform: scale(2);
                opacity: 0;
            }
        }
    </style>
</head>
<body>
    <div class="fa"><div class="son"></div></div>
   
</body>
</html>

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