Integrity is a Drupal 8 bootstrap multipurpose theme, Developed for your Business, Corporate, Portfolio. Its easy to use and fully customize.
Features : Based on Bootstrap 3 100 % Responsive 1/2/3 Column layout support Font Awesome 17 Regions Customizable slideshow Support Multilevel menu Enable Multi-level Menus : There is two important configuration to enable the multi-level menus in drupal,
- Enable "Show as expanded" option in the parent menu item
- Set unlimited on "Maximum number of menu levels to display" in Main navigation block configuration
Project page : https://www.drupal.org/project/integrity