Elementor\Stylesheet::parse_rules PHP Method

    public static function parse_rules(array $rules)
    {
        $parsed_rules = '';
        foreach ($rules as $selector => $properties) {
            $selector_content = self::parse_properties($properties);
            if ($selector_content) {
                $parsed_rules .= $selector . '{' . $selector_content . '}';
            }
        }
        return $parsed_rules;
    }