Customizr – want completely blank page

I have been working with the Customizr theme to make essentially a blank Web site. I have it almost where I want it, but there is still one header section left and I can’t figure out how to get rid of it. I have used code that I have found from other similar questions, but it left this (web address of my site): https://www.winjohnyysipad.com.

Does anybody have any idea how I can get rid of what’s left? It seems especially troublesome on the mobile site. I am definitely a beginner at this so any help anyone could provide would be great. Thanks!