public function getColumnClassName($index)
	{
		if (!class_exists(ColumnsStart::class)) {
			return '';
		}

		$config = ColumnsStart::getColumnsConfiguration($this->arrData);

		$classes = array('rs-column');
		foreach ($config as $name => $media) {
			$classes = array_merge($classes, $media[$index % count($media)]);
			if ($index < count($media)) {
				$classes[] = '-' . $name . '-first-row';
			}
		}

		return implode(' ', $classes);
	}