[Q] how to disable float top bar on the xda site? topic

I'm new here, and silly question perhaps, but how to disable the float (stay on top of screen when scrolling down) behaviour of the top navigation/settings bar on this site? It's eating up screen surface. Great to have it at top of page, but not always floating at top of screen. My android screen is already small enough.
I tried rummaging around in the settings section.
Thanks