[Theme: Splendio] Top menu wrapping

I’d love to know where to find the formatting for the top menu on Splendio. I don’t like the way it wraps, and would rather have it run straight across above the banner, (and yes there’s room for this, now that I’ve edited out the search and syndication widgets that were in the way). If you’ve encountered something like this yourself, please just let me know which file to edit! I can’t seem to find it yet.

Thanks!