cullmann.io/themes/CodeIT/assets/css/_mixin/_link.scss

@mixin link($light, $dark) {
  a,
  a::before,
  a::after {
    text-decoration: none;

    color: if($light, $global-link-color, $single-link-color);

    [theme="dark"] & {
      color: if($dark, $global-link-color-dark, $single-link-color-dark);
    }
  }

  a:active,
  a:hover {
    color: if($light, $global-link-hover-color, $single-link-hover-color);

    [theme="dark"] & {
      color: if(
        $dark,
        $global-link-hover-color-dark,
        $single-link-hover-color-dark
      );
    }
  }
}