For an example see Wikiwand gear (cog) menu in the top-right corner.
It is a recurring request to allow users (logged-in and anonymous) to customize their viewing experience with the following options:
- font-size -- ex. 12px - 14px (Vector) - 16px (Minerva) - 18px
- sans / sans-serif font -- inherently subjective choice
- font-family -- ex. a few options: a modern webfont / WikimediaUI Base's system font stack / system default
- theme - light/dark mode or more (theme implementation is not a concern of this task)
The common solution is to provide a pop-up menu, similar to echo's pop-up, its icon also placed next to the user menu, see Wikiwand for an example.
This task is universal to all skins, but might be implemented as part of the Desktop Improvements project.