*
  margin: 0
  padding: 0

html,body
  width: 100%
  height: 100%

body *
  font-family: "Helvetica Neue",Helvetica,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","微软雅黑","黑体",Arial,sans-serif

ul
  margin: 0
  padding: 0
  list-style: none


.clearfix:after
  content: "."
  display: block
  height: 0
  clear: both
  visibility: hidden

a
  text-decoration: none

img
  display:block