请老师检查

来源：2-21 自由编程

慕UI4313976

2021-03-09 10:26:12

<!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>
        .wrap{
            width: 88px;
            height: 81px;
            position: relative;
            background: url(./img/xin.png) no-repeat center center;
        }
        .heart{
            width: 88px;
            height: 81px;
            position: absolute;
            top:50%;
            left: 50%;
            margin-top: -40px;
            margin-left: -44px;
            animation: xt 1s ease 0s infinite;
        }
        @keyframes xt{
            from{
                opacity: 1;
                transform:scale(1)
            }
            to{
                opacity: 0;
                transform:scale(2);
            }
        }
    </style>
</head>
<body>
    <div class="wrap">
        <img src="./img/xin.png" alt="" class="heart">
    </div>
</body>
</html>