Comment by dredmorbius

Revisiting this in landscape mode: the main body text is too small and too wide.

Again: for virtually all content, max width of ~35-45em, with a slight margin (I really don't like text flush with screen edge except on the very narrowest of displays, 1-4em margin responsive across a set of displays from >30em to ~70 would be about right).

Zoomable font size holding page to fit within viewport would be a big gain.

Screenshot: https://m.imgur.com/5rCdRdI

Mind that's a 10" display. Fonts are small for my eyes. Context-zooming on main content helps somewhat, but only marginally.