How to remove TopBar-Navbar

Hey people,
I am new to WordPress and i am working on a page for my grandparents small business. Just to let u know, i am nor an expert in html neither in prgramming. I designed everything like i want it on ZERIF Lite, but now i want to remove the top bar, which is also scrolling down. I dont know if its called navigation bar or top bar, but the logo was on this bar and i succsefully removed it. But i want the whole bar to get removed. Please Help, because this is my only problem with this and then the site is finished. Thank You very much!

Best Regards, Laos