Problem with a logo

Heya guys.

I’m having a real problem with my logo. It overlaps the top of the table, menu and text that are directly below it. Here is a link so you can see what I mean : https://soniclondon.com/
It isn’t possible for me to make the logo smaller, so could anyone help me think of a way to somehow bump the rest of the content downwards? I had a go at editing the theme’s code (the theme is called Finojaho by the way), but to be honest I only know basic HTML, and nothing I tried seemed to work…