/* 清除浮动塌陷问题 */
.clearfix:after {
clear: both;
}
.clearfix:after {
clear: both;
}
.clearfix:after,
.clearfix:before {
content: " ";
display: table;
}
.clearfix:before {
content: " ";
display: table;
}
/* 清除浮动塌陷问题 */ .clearfix:after { clear: both; } .clearfix:after, .clearfix:before { content: " "; display: table; }