(I assume this is in reference to the hand-coded html document entitled "What is Linux on the Web?" rather than the desktop environment itself.)
This doc helped me, basically my one stop shop for making text reflow and telling mobile browsers that they shouldn’t try to “fix it” for me: https://developer.mozilla.org/en-US/docs/Learn/CSS/CSS_layou...
But for what it’s worth, looks fine to me as is on iOS safari.