code: public static function add_styles() {
  
  		self::look_if_process_files( 'style' );
  
  		foreach ( self::$data['style'] as $data ) {
  
  			wp_register_style(
  				$data['name'],
  				$data['url'],
  				$data['deps'],
  				$data['version'],
  				$data['media']
  			);
  
  			wp_enqueue_style( $data['name'] );
  		}
  	}
docs: Add register and enqueue styles.