Guys,

I'm trying to change orientation of the labels in tree view. Because my custom view will be a kind of configuration form with a multiple boolean fields I need change it to fit as much as possible columns.

Tried to add class in css but it won't work, probably because  there is a class with higher priority than mine.

Also I want it only in my view so I don't want to change it for all tree views in Odoo.

Any ideas ?

Or the only way to achieve it is just apply style into the lines in xml ?