Logo overlap Header responsively

Hi.

I’m still familiarizing myself with Enfold. Thank you for having such a great support team!

My business’ logo is vertical, which makes it rather small in the header. I would like to have it overlap the header (a little like this other website I built: http://www.iccf.org/) but to do so responsively so I don’t ruin the functions. That is, upon scrolling down, I would like it to pop back into the header completely, and be able to scale to phone size etc. still. As the code is rather complicated (it’s a great theme!) I don’t want to change too much on my own.

The site is: http://fusewm.com Goals: Make logo bigger & responsively drop below header.

Thanks!