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来源：2-14 编程练习

芜湖呼

2022-01-11 00:53:23

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style>
        #myTest{
            width: 100px;
            height: 100px;
            text-align: center;
            line-height: 100px;
            background-color: #f43838;
            margin: auto;
            margin-top: 100px;
            color: #FFF;
            cursor: pointer;
            font-size: 20px;
            font-weight: bold;
        /*添加代码*/
            transition: all 0.5s linear 0s;
        }
        #myTest:hover{
            /*添加代码*/
            transform: scale(2);
            border-radius: 50%;
            background-color: green;
        }
    </style>
</head>
<body>
    <div id="myTest">  duang! </div>
</body>
</html>

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