Polylang: CSS for language switcher in menu bar?

I’m just trying to mess around with the language switcher in the menu bar: trying to move it to the far side, and make it much, much smaller. Can’t figure out how to do it, though: the way it automatically gets added to the menu bar seems to slot it under the same “rules” as the rest of the bar and I’m not savvy enough to figure out how to make it react separately.