老师，请问是否规范

来源：4-5 编程练习

慕婉清2345585

2020-03-21 21:54:51

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>CSS选择器优先级</title>
        <style type="text/css">
            /*补充代码*/
           div{color: red;font-size: 20px;}
           div.class{color: green;font-size: 30px;}
           #blue{color: blue;font-size: 25px;}
        </style>
    </head>
    <body>
       <div class="green" id="blue">前端CSS选择器优先级的学习</div>

    </body>
</html>