- 父级标签定义height高度
- 结尾处加空div标签,clear:both
- 父级定义overflow:hidden
- 单伪元素法
content:"";
display:block;
visibility:hidden;
height:0;
line-height:0;
clear:both;
- 双伪元素
.div:before,.div:after {
content: "";
display: block;
clear:both;
}
.div {
zoom: 1;}
content:"";
display:block;
visibility:hidden;
height:0;
line-height:0;
clear:both;
.div:before,.div:after {
content: "";
display: block;
clear:both;
}
.div {
zoom: 1;}