My apologies - I was unclear. Let me try again.
Wiki:
- On Windows, you can adjust both the window size and the browser text size, and the wiki layout adjusts to match.
- On Android, you can't adjust the window size or the browser text size - you can only zoom, and zooming does not this does not affect the layout, which is sized to exactly fill the screen when not zoomed. If you zoom in so that you can read the text, the display is clipped, so you have to horizontal scroll every line to read it.
Forum: The forum layout is entirely static, so things are even worse there.
The screen shot above seems to have been taken on a tablet. On a phone, things are harder to work with.
I don't now what "desktop mode" mode is, or how to activate/deactivate it.
It may be too hard to fix this. If we were starting from scratch, WordPress might be a better choice for the Forum.