SideNav scrolling from top instead from left or right

[Magallo]

Hi! Using NavBar as a sort of header for my pages, is there a way to have a sort of collapsible panel to show/hide navigation items that expand/collapse vertically from the top? I try to explain better. Let's look the showcase. The showcase use a sidenav as a sort of navigator among pages. The sidenav can collapse/expand these items but it can be anchored only on the left or on the right. It's not possible to have it on top. Is there a way to achieve this in some way? Something similar to the bootstrap Navbar.

[kevzlou7979]

Can you send me a screenshot? If you want to have a navigation items on Navbar then you might consider using MaterialDropdown inside MaterialNavBar