How to Use a Larger Logo?

Any quick thoughts on how to make the logo container larger than 250px? I have a longer landscape orientation logo and when I upload it, it’s tiny. If it could even go up to 350px, it would make a HUGE impact. I've hard edited the max-width portion of the CSS and that works on desktop view, but breaks when in tablet or phone view. Here's my site so you can see the problem: https://www.bhfot.org/