Adding a Hamburger Menu Background Image

Hi all,

I've been looking to have a hamburger menu on my desktop. I've seen some code around that allows this to be forced, however, I was wondering how far this can be tweaked.

I discovered this website: https://www.settlenorfolk.co.uk/ which has a really nice burger menu where the background image changes on hover.

How easy would something like this be to achieve? 
Thanks,

Dan

Can you share your site with the protected password to check?

In addition of that, i can click on the burger menu on your sample site. Can you describe more detail about your intention? Some screenshot could help a lot