webveuje/csspress/demo/clearfloat.html

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2021-01-20 11:25:18 +08:00
<!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>
* {
margin: 0;
padding: 0;
}
.box {
width: 1000px;
height: 300px;
background: gold;
margin: 20px;
}
.box1 {
/* width:60px;
height: 60px; */
background: red;
/* background: rgba(255, 0, 0, 0.363); */
/* float: left; */
}
.box2 {
width: 120px;
height: 80px;
background: gray;
border: 1px solid pink;
color: white;
/* float:right */
float: left;
}
.box4 {
width: 120px;
height: 80px;
background: blue;
border: 1px solid pink;
/* clear: left;
这是哪个元素需要清除浮动哪个元素加clear
*/
}
.boxes{
overflow: auto;
/*
这是通过Overflow:auto 清除浮动
*/
}
.blank{
clear:left
}
/*
在浮动元素最后面加一个空的div 附上clear属性清除浮动
*/
/* .boxes:after {
content: '.';
height: 0;
display: block;
clear: both;
}
这是通过伪类清除浮动必须加上content:"." 否则不起作用
*/
</style>
</head>
<body>
<div class="box">
<div class="boxes clearfix">
<div class="box1">asaaaa</div>
<div class="box2"></div>
<div class="box2">4</div>
<div class="box2 blankdiv">5</div>
<!-- <div class="box2" style="height: 180px;">6</div> -->
<div class="blank"></div>
</div>
<div class="box4"></div>
</div>
</body>
</html>