2-16编程联系

来源：3-1 @keyframes

a386491333

2017-06-22 21:08:21

<html>
<head>
    <meta charset="UTF-8">
    <title>2-9</title>
    <style type="text/css">
        div {
            font-family: Arial;
            font-size: 72px;
            font-weight: bold;
            position: fixed;
            right: 0;
            left: 0;
            width: 30px;
            height: 30px;
            margin: auto;
            transform: rotate(90deg);
            /*此处写代码*/
            top:90%;
            animation: active1 .8s infinite alternate;        }
        @keyframes active1{
            form {top:90%;}
            to   {top:95%;}
        }    </style>
</head>
<body>
    <div>></div>
</body>
</html>