It only happens with Stack Overflow, so I think it's probably a certain key combination or something I did with the mouse without noticing.
How can I undo this?
In Firefox under windows (so may not apply to Ubuntu), Ctrl 0 will reset the size to standard. Do it once and it should stay that way. Any good?
View -> Zoom -> Reset
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
6 years ago
4 years ago