First way: additional label clarity
<div style="clear: both;"></div>
Features: if the float is cleared, the father will automatically check the height of the child, whichever is the highest
Advantages: easy to understand
Disadvantage: add additional tags to break the structure
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Extra label clear float</title>
<style>
.father {
}
.big {
width: 200px;
height: 200px;
background-color: blue;
float: left;
}
.small {
width: 100px;
height: 100px;
background-color: yellow;
float: left;
}
.footer {
width: 400px;
height: 100px;
background-color: pink;
}
/* Clear floating */
/* .clear {
clear: both;
If the float is cleared, the father will automatically check the height of the child, whichever is the highest
} */
</style>
</head>
<body>
<div class="father">
<div class="big"></div>
<div class="small"></div>
</div>
<!-- Extra label clear float -->
<!-- <div class="clear"></div> -->
<div style="clear: both;"></div> <!-- Advantage:Easy to understand:Added a lot of extra useless tags to break the structure -->
<!-- Extra label clear float -->
<div class="footer"></div>
</body>
</html>
The second way: overflow cleanup
Add overflow:hidden in the parent tab box
Advantages: simple code
Disadvantages: when the content is increased, it is easy to avoid automatic line wrapping, resulting in the content being hidden
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>overflow Clear floating</title>
<style>
.father {
/* Add overflow: hidden; to the parent element to clear the float
Not all floats need to be cleared, and the influence will be cleared
Advantages: simple code;
Disadvantages: when the content is increased, it is easy to avoid automatic line wrapping, resulting in the content being hidden
Cannot display elements that need to overflow; */
overflow: hidden;
}
.big {
width: 200px;
height: 200px;
background-color: blue;
float: left;
}
.small {
width: 100px;
height: 100px;
background-color: yellow;
float: left;
}
.footer {
width: 400px;
height: 100px;
background-color: pink;
}
</style>
</head>
<body>
<div class="father">
<div class="big"></div>
<div class="small"></div>
</div>
<div class="footer"></div>
</body>
</html>
The third way: after pseudo element removal
. clearfix:after {/ * normal browser clear float*/
content: "";
display: block;
height: 0;
clear: both;
visibility: hidden;
}
.clearfix{
zoom: 1; /* zoom 1 is the method for ie6 to clear floating * it is recognized by versions below ie7*/
}
The fourth way: Double pseudo element marking
.clearfix:before, .clearfix:after {
content: "";
display: table;
}
.clearfix:after {
clear: both;
}
.clearfix {
*zoom: 1;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>overflow Clear floating</title>
<style>
.clearfix:before, .clearfix:after {
content: "";
display: table;
}
.clearfix:after {
clear: both;
}
.clearfix {
*zoom: 1;
}
.father {
}
.big {
width: 200px;
height: 200px;
background-color: blue;
float: left;
}
.small {
width: 100px;
height: 100px;
background-color: yellow;
float: left;
}
.footer {
width: 400px;
height: 100px;
background-color: pink;
}
</style>
</head>
<body>
<div class="father clearfix">
<div class="big"></div>
<div class="small"></div>
</div>
<div class="footer"></div>
</body>
</html>