public function addCss($css)
    {
        $this->addHook(function($document) use ($css) {
            $document->addCss('/'.$css);
        });

        return $this;
    }
public function addCss($css)
    {
        $this->addHook(function($document) use ($css) {
            $document->addCss('/'.$css);
        });

        return $this;
    }
public function addCss ( $ css ) { $ this -> addHook ( function ( $ document ) use ( $ css ) { $ document -> addCss ( '/' . $ css ) ; } ) ; return $ this ; }
Adds a stylesheet to the final document

@param $css the stylesheet to add
Adds a stylesheet to the final document