.arrow
  position absolute
  z-index 999
  border-width 1u
  border-style solid
  border-color transparent

.arrowBottom
  border-bottom-color $UI.colors.white

.arrowTop
  border-top-color $UI.colors.white

.arrowLeft
  border-top-color $UI.colors.white
  transform rotate(-90deg)

.arrowRight
  border-top-color $UI.colors.white
  transform rotate(90deg)