04 / fixed + overscroll

As shipped. This page adds no override, so if it looks wrong then global.css has changed. fixed for the seam,overscroll-behavior-y: none for the band.

Pull past either end in tall — nothing moves, and there is nothing to expose. That is the only fix available once you accept that no colour can fill a region a fixed background never paints.

It costs the elastic bounce on every page. Accepted knowingly, not inherited: 02 shipped first and was pulled when the band survived it. Judge this by scrolling — every screenshot of it is identical to 02.