Add the subhodaya-small, subhodaya-large, subhodaya-xlarge or subhodaya-xxlarge to change the size of the navigation (will change the font-size of each link).
Default:
subhodaya-large:
subhodaya-xlarge:
subhodaya-xxlarge:
If you want more space between each link, instead of increasing the font-size, you could add the subhodaya-padding-classes to each link: