code: public function css(
  		string $selectors,
  		string $prefix = "descendant-or-self::"
  	):HTMLCollection {
  		$converter = new CssSelectorConverter();
  		$xPathSelector = $converter->toXPath($selectors, $prefix);
  
  		return $this->xPath($xPathSelector);
  	}
docs: @param string $selectors CSS selector(s)
  @param string $prefix
  
  @return HTMLCollection