Top feature Image adustment

Hi everyone.

First off this is my site I have created for my wedding coming up. https://eliotandprusha2017.com/
I’m currently working on it but have a issue I can seem to figure out. If you notice there is a gap between my top menu and my top feature image. What I’m trying to accomplish is getting rid of that gap by raising my image to just under the menu. I edited the class .header_container.not_home
change url(images/header-bg1.png) … to url(images/header-bg.png). For some reason it’s not recognizing that the home page is the ‘home’ so it’s pulling the header styling for the class .not_home. Can someone tell me what i should do to correct this? Thank you ahead of time!