Hi Gregory,
Achieving this is considered customization work. Unfortunately, this is a service that we do not provide. We only share snippet only to solve issues with our theme. Any further request for CSS snippets will have to be part of a defect that needs to be fixed urgently. No snippets will be shared otherwise.
If you want to go further with the customization of your website, we advise that you hire a developer to do it for you.
If you’re on a tight budget, we recommend you to require the services from Fiverr. This web platform gives you access to developers who already have experience with theme customizations, and for very competitive prices.
Disclaimer : we have no affiliation with Fiverr and are only recommending it as a starting point and a popular option for those who might not be sure where to look when in need of some custom work.
To achieve that, you might create an item in the primary navigation and add the logo as image, thanks to Menu Image plugin. This item needs to be in the center. of all items in this menu. Then, you can add some CSS to make it fit visually desktop. On tablet and mobile, this item needs to be hidden, as the standard logo will be displayed.
Hope this will help you.