检查代码！
来源：2-10 编程练习
福徐贵
2020-05-24 13:10:50
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
/*完善下列代码*/
.per{
width: 300px;
height: 300px;
background: red;
margin-left:200px;
margin-top: 200px;
position: relative;
}
.son{
width: 100px;
height: 100px;
background: blue;
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto;
}
</style>
</head>
<body>
<div class="per">
<div class="son"></div>
</div>
</body>
</html>
写回答
1回答
-
好帮手慕小鱼
2020-05-24
同学你好，代码是正确的。继续加油，祝学习愉快~
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