2-21作业请检查

来源：2-21 自由编程

请老师大大检查作业

2021-11-19 15:25:58

相关代码：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=k, initial-scale=1.0">
    <title>Document</title>
    <style>
        .fu{
            position:relative;
            width: 88px;
            height: 81px;
            background-image: url(images/xin.png);
            margin:100px auto;
        }
        .zi{
            width: 88px;
            height: 81px;
            background-image: url(images/xin.png);
            position:absolute;
            left:0;
            top:0;
            animation:dongdongdong .5s linear 0s infinite ;
        }
        @keyframes dongdongdong{
            from{
                opacity:1;transform:scale(1);
            }
            to{
                opacity:0;transform:scale(2);
            }
        }
    </style>
</head>
<body>
     <div class="fu">
         <div class="zi"></div>
     </div>
</body>
</html>

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