Make your UberMenu a sticky menu

Sticky menus allow your users easy access to your menu at all times, without having to scroll back to the top of the page to navigate to a different part of your site. The Sticky Menu Extension will stick your menu in place even if it doesn’t start off at the top of your site, and hold it there while your users browse your content.

Please note: Fixed menus, by nature, may be cut off by the extents of the viewport (browser window size, device screen, etc). Anything that doesn’t fit on the screen will be inaccessible. Please keep this in mind if you have very large submenus.

As fixed-position elements are taken out of the document flow, they can't be positioned relative to other elements, only to the screen/viewport. Generally the full-width sticky menu is going to be the best option for 99% of use cases.