作者在 2014-03-10 17:55:19 发布以下内容
.clearfix:after
clear: both
content: "."
display: block
height: 0
visibility: hidden作者在 2022-10-20 12:18:36 补充以下内容
scss版的：
.clearfix:after {
clear: both;
content: ".";
display: block;
height: 0;
visibility: hidden;
}
