No apology necessary, I sincerely appreciate the help.
It’s actually the area above the logo, not the area between the logo and the drop down menu. Notice in the Kanso theme that area is filled with white, and the whole menu seems to be fixed. On My website, there is a transparent area above the menu, which is causing an interesting glitch where the menu expands and collapses, like it does on a desktop browser.
I have a screenshot, but was unable to paste it in this message so I sent it in an email…