I'm working on a library website and we're leaning toward a megamenu.
In a recent meeting, we had a discussion about whether the megamenu should push the rest of the content down when it opens, like this library in Kansas, or if it should lay on top of the content like this library in South Carolina.
I know that one of those sites looks a bit nicer than the other one, so please put that aside. I'm only wondering if either behavior is better from a UX standpoint. I haven't been able to find any studies or data indicating one is better than the other.
The menu will open on click/touch, not hover.