.uif-corner-check
  position absolute
  left 0
  top 0
  border-top 16px solid $primary-color
  border-left @border-top
  border-right 16px solid transparent
  border-bottom @border-right
  width 0
  height 0
  .uif-i
    position absolute
    left -13px
    top -16px
    color #fff
    z-index 1
    font-size 16px
    width 16px
    text-align center