一、清除浮动
image.png
二、代码演示
2-1: clear: both;(清除左右浮动均可)
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link rel="stylesheet" type="text/css" href="index.css">
</head>
<body>
<div id="div1">
<div id="div2"></div>
<div id="div3"></div>
<div id="div4"></div>
</div>
</body>
</html>
index.css
#div1{
background-color: red;
}
#div2{
background-color: yellow;
float: left;
width: 200px;
height: 200px;
}
#div3{
background-color: blue;
float: left;
width: 220px;
height: 220px;
}
#div4{
background-color: black;
width: 240px;
height: 240px;
/*从div4开始，清除该元素之前的浮动*/
clear: both;
}
2-2: clear: right;(清除右浮动)
index.css
#div1{
background-color: red;
}
#div2{
background-color: yellow;
float: left;
width: 200px;
height: 200px;
}
#div3{
background-color: blue;
float: right;
width: 220px;
height: 220px;
}
#div4{
background-color: black;
width: 240px;
height: 240px;
/*从div4开始，清除该元素之前的浮动*/
clear: right;
}
2-3:另一种清除方式
index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<link rel="stylesheet" type="text/css" href="index.css">
</head>
<body>
<div id="div1">
<div id="div2"></div>
<div id="div3"></div>
<div id = "clearDiv"></div>
<div id="div4"></div>
</div>
</body>
</html>
index.css
#div1{
background-color: red;
}
#div2{
background-color: yellow;
float: left;
width: 200px;
height: 200px;
}
#div3{
background-color: blue;
float: right;
width: 220px;
height: 220px;
}
#div4{
background-color: black;
width: 240px;
height: 240px;
}
#clearDiv::after{
content:"";
visibility: hidden;
height: 0px;
display: block;
clear: both;
}
}
image.png
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