Scrollbar in 1up clipped by navbar

[cdrini]

Repro:

1. Go to https://archive.org/deatils/goody/mode/1up
2. Observe the bottom of the scroll bar is clipped

[ParthAggarwal16]

I can reproduce this on macOS (chrome), The scrollbar thumb disappears behind the fullscreen icon when scrolling to the bottom of the book, I also see this on mobile

On macOS, the overlay scrollbars make this less obvious than in your screenshot (which appears to be Windows/Linux with persistent scrollbars), but it's the same underlying issue, the scrollable area doesn't account for the bottom navbar height,
the scrollbar navigation should exclude navbar height

(also your repro URL seems to have a typo "deatils" instead of "details" lol )

I'll start working on a fix for this soon