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来源：2-17 编程练习

三年没洗澡

2019-03-09 00:42:53

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>动态伪类</title>
        <style type="text/css">
            /*此处写代码*/
            input:hover{
                border-color:red;
            }
            input[type="text"]:focus{
                background:orange;
            }
            input[type="password"]:focus{
                background:yellow;
            }
        </style>
    </head>
    <body>
        <!-- 此处写代码 -->
        用户名：<input type="text">
        </br>
        密码：<input type="password">
    </body>
</html>

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