$d == 1 ? \ : /
@mixin digline($c: black, $b: 2px, $w: 1, $h: 1, $d: -1) { border-top: $b solid $c; transform: matrix(1, ($d * ($h / $w)), 0, 1, 0, ($h / 2)); width: #{$w}px; height: #{$h}px; }