Option to increase the font-size

[ShalokShalom]

Gitbook offers the option to increase the font size, which is important for my eyes.

[steveklabnik]

Does using the browser to increase the size have problems?

[opiation]

Can this be reopened to improve mobile accessibility? If required, I can open a new issue.

On both Chrome for Mobile and Brave mobile browser (both using Webkit I think), the font size does not seem to be affected by their Text scaling accessibility settings leaving only the pinch zoom option. While pinch zoom works, it then requires scrolling both vertically and horizontally to read rather than actually changing the font-size which would just reflow the page and require more vertical scaling. Pinch-zooming in and out constantly to read a mostly textual document can be quite cumbersome or tedious for those with accessibility challenges.