public function create(...$args) : String
    {
        $combineTransitions = $args;

        $str  = $this->selector."{";
        if( ! empty($this->attr) ) $str .= EOL.$this->attr.EOL;
        $str .= $this->complete();

        if( ! empty($combineTransitions) ) foreach( $combineTransitions as $transition )
        {
            $str .= $transition;
        }

        $str .= "}".EOL;

        return $this->_tag($str);
    }