@mixin triangle-before($width, $height, $color: currentColor) {
  padding-left: $width + .6875rem;
  &:before {
    content: "";
    display: inline-block;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: ($height / 2) 0 ($height / 2) $width;
    border-color: transparent transparent transparent $color;
    margin-left: -(.6875rem + $width);
    margin-right: .6875rem;
  }
}