responsive vertical menu with submenu codepen

February 26, 2015 @ Many Thanks. 3:39 pm, You can view the source in this page: https://www.thecodingguys.net/demo/css/css-vertical-menu-multiple-levels.html. 1:07 pm. Furthermore, submenus for the menu options can also be added here to increase more functionality of your website. I have not been able to add a third level and I sure could use some help. As the name infers, this one is a nested navigation example so it has sub menus in it. I believe this is what you’re looking for. As it is obvoius, I have a problem with hover over Dropdown1. Here's an example of a menu consisting of call-to-action buttons and menu links. bacause although the 3rd level background z-index position is fixed under the two levels but the text seems to be seen transitioning over the 2nd level. The height of both the main menu and the sub menus are set dynamically via JavaScript. Nested Multi-level Menu with Bootstrap 4,