css 选择器 有待练习

  1. A+B
  2. A~B
  3. :first-child, :last-child
  4. nth-first-type,nth-last-type,only-of-type
posted @ 2016-07-05 10:19  cglworkBook  阅读(134)  评论(0编辑  收藏  举报