body, html
  line-height: 1
  font-weight: 200
  font-family: 'PingFang SC', 'STHeitiSC-Light', 'Helvetica-Light', arial, sans-serif

.clearfix
  display: inline-block
  &:after
    display: block
    content: "."
    height: 0
    line-height: 0
    clear: both
    visibility: hidden

@media (-webkit-min-device-pixel-ratio: 1.5),(min-device-pixel-ratio: 1.5)
  .border-1px
    &::after
      -webkit-transform: scaleY(0.7)
      transform: scaleY(0.7)

@media (-webkit-min-device-pixel-ratio: 2),(min-device-pixel-ratio: 2)
  .border-1px
    &::after
      -webkit-transform: scaleY(0.5)
      transform: scaleY(0.5)

@media (-webkit-min-device-pixel-ratio: 3),(min-device-pixel-ratio: 3)
  .border-1px
    &::after
      -webkit-transform: scaleY(0.3)
      transform: scaleY(0.3)