The Navbar component's full width option allows the component to span the entire page / screen's width in size -- ideal for sticky nav and overall site navigation.
This full config option for the Navbar component can be combined with the other config options available such as center.
The Navbar component's auto width option allows the component to be used in situations where it doesn't / shouldn't span the browser's entire screen-width in size (ex. in a sidebar or off-canvas nav)
This provides maximum flexibility when coming up with creative solutions.