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{
width: 200px;
height:150px;
background-color: #eee;
margin-top: 5px;
}
section{
width: 200px;
height: 30px;
margin-bottom: 5px;
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>
1回答
同学你好,代码实现很正确,继续加油,祝学习愉快!
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