In addition to extra features in Alpine 7.x-2.3, in version 7.x-2.4, we offer you the update of Superfish (https://drupal.org/project/superfish) module, which can be used to create drop-down menu. Additionally, we hook into default menus such as main menu, user login, etc. Thus, you only need to assign the menus into Navigation block and the drop-down function will automatically be added. Note: when you use module superfish to create main menu, you need to set the properties as follows: