Stroke

@mixin stroke($width, $color) {
  $width: $width + 0;
  $shadow: 0 0 0 transparent;
  $i: 0;
  $w: 1;

  @while ($i < $width) {
    $i: $i + 1;
    $j: 0;
    $w: $w + 2;

    @for $r from 1 through $w {
      @for $c from 1 through $w {
        $x: $c - ceil($w / 2);
        $y: $r - ceil($w / 2);

        $shadow: #{$shadow}, #{$x}px #{$y}px 0 $color;
      }
    }
  }

  text-shadow: $shadow;
}