A long time ago, I read Robert Bringhurst's Elements of Typographic Style, and decided to make a CSS style-sheet that would try to implement as many of his recommendations as possible - limited line lengths, a consistent vertical rhythm, that kind of thing. Recently I thought to try it on my phone, and it turned out I needed to tweak it a bit for mobile compatibility.

After tweaking, I decided to use GitLab Pages to make a demonstration website, and here it is: https://screwtapello.gitlab.io/typesetter-css/