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I think the difference is that those are truly fixed. They never move. "Fixed" top menus on web pages, in my experience, always stutter at least a little bit. I

by scott_s 14y ago

I think the difference is that those are truly fixed. They never move. "Fixed" top menus on web pages, in my experience, always stutter at least a little bit. I find it distracting.

zevyoura 14y ago
They do? I agree that fixed headers that are repositioned on scroll events shudder noticeably, but when headers have a fixed positioned via CSS I haven't seen this (e.g. Facebook and Twitter's implementations).