@charset "UTF-8";

@mixin all-buttons($pseudo: null) {
  $list: "hover", "focus", "active", "disabled";
  @if not $pseudo {
    #{$list-of-buttons} {
      @content;
    }   
  } @else if index($list, $pseudo) {
    $all-buttons: __pseudoSelector($list-of-buttons, $pseudo);
    #{$all-buttons} {
      @content;
    }
  } @else {
    @error "The argument must be `null` or one of the followings: #{quote($list)}.";
  }
}