public function size($loc = 'output') {
		if ($loc === 'output' && !$this->output_css) {
			$this->formatted();
		}

		if ($loc === 'input') {
			return (strlen($this->input_css) / 1000);
		} else {
			return (strlen($this->output_css_plain) / 1000);
		}
	}