Remove white header from top of page

Hello, I'm not sure if this question has already been answered but I can't find a search function for the forum. I want to completely remove the blank white header at the top of my page, so that the image I have inserted 'before menu bar' becomes the top of the page. My site is www.cathwood.com and I am using Catch Everest Pro. I look forward to hearing from you soon. Thanks so much for a lovely theme. Cath.