You can change the font with custom classes on the navbar using a child element.
First, select the Bloc for the navigation. Add a custom class to the Bloc (example uses
Next open the class manager:
Then hit the plus sign(+) to add a class type the name (with the dash) followed by a space and the letter a:
When you get the warning message about spaces select
no leave spaces intact:
Then edit the custom class (with space and a). This will change all the text on _a_nchors within the navbar. You can also change the color.
For more info on child classes check out the Blocs Video: