Use the after pseudo-class to clear floats

In the past, when clearing floats, I always added

 <div style="clear:both;"></div>

after the element that I want to clear, or wrote it in the br tag to solve the problem, but this will Add unsemantic tags. The following is implemented using the after pseudo-class. It is compatible with multiple browsers.

.clearfix:after{
    content:"";
    display:block;
    height:0;
    clear:both;
    visibility:hidden;
}

is compatible with IE6 and IE7 because ie6 and ie7 cannot be used. after pseudo-class. Add the following code

 .clearfix{zoom:1}

Generally, if there is a float inside the parent layer, it may cause the height of the parent layer to be 0. Just add clearfix.

HTML：

 <p class="parent clearfix">
     <p class="left">left</p>
     <p class="right">right</p>
 </p>

CSS:

.clearfix{zoom:1}    
.clearfix:after{
    content:"";
    display:block;
    height:0;
    clear:both;
    visibility:hidden;
}
.parent{
    background-color:red;
    width:120px;
}
.left{
    float:left;
    background-color:pink;
    height:60px;
}
.right{
    float:right;
    background-color:#abcdef;
}

More use after pseudo-class clearing For floating related articles, please pay attention to the PHP Chinese website!