I’m having similar problems as well. I can comment an area out to verify that the styles in the related class or id are controlling what I think they are on the page, but when I go to change the selector values nothing happens. It’s quite frustrating.
Stinkykong, I was working on my navbar styling as well and nothing was working. Once I added new links to the menu in Appearance>Menus, those new links had taken the new styling. So I had to remove all the links that weren’t taking the new styling, and re-add them. It seemed to work.