It's on the advanced tab. Reduce the top margin.
You can also check your Navigation bar properties / Advanced tab / Navigation Bar Margin
reduce the bottom margin
It's easy to overlook something you're not looking for.
This is a site I built for my work.(RSD)
This is a site I built for use in my job.(HTML Editor)
This is my personal site used for testing and as an easy way to share photos.(RLM imported to RSD)