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来源：2-18 编程练习

KangarooL

2021-03-19 17:04:10

相关代码：

<!DOCTYPE html>
<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*/
            animation:xhjt 1s linear 0.5s infinite;
        }

        @keyframes xhjt {
            from {
                transform:rotate(90deg) translate(0,0);
            }

            to {
                transform:rotate(90deg) translate(20px,0);
            }
        }
    </style>
</head>
<body>
    <div>&gt;</div>
</body>
</html>