is-number.scss

@import "setup";

@mixin line-height($number) {
  @if _is-number($number) {
    line-height: $number;
  }
}

.integer {
  @include line-height(1);
}

.px {
  @include line-height(2px);
}

.em {
  @include line-height(3em);
}

.rem {
  @include line-height(4rem);
}

.percent {
  @include line-height(5%);
}

.string {
  @include line-height("stringy");
}