move to HTTPS?

Yes! And my banner is locally uploaded. I wish I could increase the header area now (vertically). There appear to be no controls to do that in that area.
 
Appearance > Styles > Your style > Style properties > Header and navigation, play around with the padding settings.
 
All the padding options there are for the navigation areas. I increased the size of my logo, which increased the size of the header area. I will have to mess around with it more to achieve the look I am going for.
 
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