请老师检查一下。谢谢。

来源:3-31 编程练习

慕斯卡2474635

2021-05-20 21:24:53

<!DOCTYPE html>

<html>

<head>

    <title></title>

    <style type="text/css">

        div{

            width200px;

            height:150px;

            background-color#eee;

            margin-top5px;

        }

        section{

            width200px;

            height30px;

            margin-bottom5px;

            background-color#ff0;

        }

        /*此处写代码*/

        div:empty {

            background-color#f00;

        }

        section:empty {

            background-color#abcdef;

        }

    </style>

</head>

<body>

    <div>

        <section>one</section>

        <section>two</section>

    </div>

    <div></div>

    <div>

        <section>three</section>

        <section>four</section>

        <section>five</section>

        <section></section>

    </div>

</body>

</html>


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1回答

好帮手慕然然

2021-05-21

同学你好,代码实现很正确,继续加油,祝学习愉快!

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