message: Extracts seam cover
diff: @@ -209,3 +209,15 @@ break-word()
  word-wrap break-word
  -ms-word-break break-all
  word-break break-word
  +
  +cover-seams($color = white)
  + &:after
  + display block
  + content ''
  + position absolute
  + top 0
  + right 0
  + bottom 0
  + left 0
  + box-shadow inset 0 0 0 1px $color
  + pointer-events none
  