use scroll-padding to make sure links under the footer can be tabbed to

[Boldewyn]

https://www.reddit.com/r/Frontend/comments/10v92z8/accessible_css_tabbing_with_scrollpadding/

This is relevant for items under the main navigation on small displays. Never mind, that those often lack a tab key, but it’s a matter of principle (and I want to play with that property :-) )