Where is the place to edit the navigation bar?

I inherited this website and have been through it over and over looking for where to edit the header navigation layout. I had it once but can’t find it again. Is there some way that some one can tell me where to edit the layout of the nav (spacing and type styles) on the site at loxalucieheadwaters.com. Please any help will be greatly appreciated.

Sue

Ok so I found it - it is in customizer > header (of course!)