Yeah you are right, I apologise for my bad wording.
Update: Now I have actually had some sleep… Your method does work, and I am always open to suggestions on improving workflow, however you will still need to add code to the page header to achieve the effect the OP was after, since the class manager doesn’t, at present support all of the styles needed.
One solution is adding one extra line position: relative; to the existing code with the default classes.
I personally think this approach is easier.
If you are interested… adding to the manager a class called
navbar-nav li a
will style the menu links without having to add classes to every item. Blocs will add this class to the manager if you edit the navigation link text in the project settings.