这样子对吗
来源：2-10 编程练习
慕雪9046520
2020-04-08 10:46:51
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.per{
width: 300px;
height: 300px;
background-color: red;
margin-top: 200px;
margin-left: 200px;
position: relative;
}
.son{
width: 100px;
height: 100px;
background-color: blue;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin:auto auto;
position:absolute;
}
</style>
</head>
<body>
<div class="per">
<div class="son"></div>
</div>
</body>
</html>
1回答
-
好帮手慕久久
2020-04-08
同学你好，代码是正确的，很棒，祝学习愉快！
0
