@mixin line-through($color: $color-2, $background: $color-1) {
  position: relative;
  text-align: center;

  &:before {
    content: "";
    position: absolute;
    top: calc(50% - 1px);
    left: 0;
    width: 100%;
    height: 1px;
    background: $color;
    z-index: 0;
  }

  > * { // usually a <span> but we'll use an * just in case
    @include padding(null 1rem);
    position: relative;
    background: $background;
    z-index: 1;
  }
}