Thread:Skin talk:Chameleon/Navbar behavior on small screens/reply

The nav bar is intended to be a horizontal nav bar that on very small screens (e.g. phones) collapses to make use of the limited available space as best as possible. Using it as a vertical nav bar may lead to switching to phone mode prematurely.

Looking at  it might work to set @grid-float-breakpoint to 0. I have not tried this, though.