永久会员
- 威望
- 3554
- 贡献
- 5242
- 热心值
- 0
- 金币
- 3392
- 注册时间
- 2019-8-13
|
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
.box1{
width: 200px;
height: 200px;
background-color: #bfa;
}
.box2{
width: 100px;
height: 100px;
background-color: #ff0;
margin-top: 100px;
}
.box1::before{
content: "";
display: table;
}
</style>
</head>
<body>
<div class="box1">
<div class="box2"></div>
</div>
</body>
</html>
|
|
楼主: 已坠凡尘
发表于 2020-11-18 15:05
