随笔

超出部分出现省略号：

.show-dots{
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
清除浮动：

.clearfix:after {
  content: '';
  display: block;
  clear: both;
  font-size: 0;
}
底部横线：

.line-shadow{
  box-shadow: 0 1px 0 rgba(0,0,0,0.04);
}

.cat-line-shadow{
  box-shadow: 15px 1px 0 rgba(0,0,0,0.04);
}