How to make such a menu on bootstrap?

Question

User navigation

there is a horizontal nav bootstrap menu using an example
. For example, the category Desktops, when you click on it, subcategories come off
. clicked)
can anyone come across solutions so that the menu with the mobile version would look like in the photo ("+" "-" to expand the subcategory) and with a resolution> 980 the transition to the parent category was made