css overflow:hidden 清除浮动

来源：互联网发布：matlab编程第二版答案编辑：程序博客网时间：2024/05/17 07:32

发现overflow：hidden 有clear:both 的功效

当父容器设置了 overflow:hidden 的时候

发现效果等效于设置了父容器的清除浮动伪类 :after clear:both

<!DOCTYPE html>
<html>
<head>
<title></title>
<meta charset="gbk">
<style type="text/css">
.wyFirst {
width: 100px;
height: 100px;
background-color: red;
float: left;

}

.wySecond {

width: 100px;
height: 100px;
background-color: blue;
float: left;

}

.wrapper {

background-color: yellow;

overflow:hidden;// 这一句与下面after 等效
}

.wrapper:after {
clear: both;
display: block;
content: " ";
}

.wyThird {

width: 100px;
height: 100px;
background-color: green;

float: left;

}
</style>
</head>
<body>
<div>
<div class="wrapper">
<div class="wyFirst">this is a test</div>
<div class="wySecond">this is a float</div>
</div>
<div class="wyThird">this is a float</div>
</div>
</body>
</html>

0 0