@function css-alpha($base-color, $amount) {
  @return #{rgb(from $base-color r g b / $amount)};
}

@mixin invert-on-light {
  .invert-on-light {
    filter: invert(1);
  }
}

@mixin invert-on-dark {
  .invert-on-dark {
    filter: invert(1);
  }
}