But that doesn't work as well, since for example on this page there is JS event tied to scrolling the page that moves the header with you. So you'd have to tie

But that doesn't work as well, since for example on this page there is JS event tied to scrolling the page that moves the header with you. So you'd have to tie your own anti-move trigger to the same event, which might mean same script won't be universal. If you just remove the header with a script, you can still get to the navigation by refreshing the page.