Can't access menu items – keeps clicking on header

Hello!

First off, like everyone has already said, thank you for such a beautiful theme, and secondly, while this is my first post, I can see how dedicated and helpful you’ve been on support. As a newbie, I’ve been tinkering around and referencing this support has been invaluable.

Now onto my problem. I am having trouble running the theme on my phone (Samsung Note 4). When I expand the menu, the options overlap the logo. When I attempt to click on a menu option, I end up pressing the logo instead.

I did make some CSS modifications. My header logo was too small so I changed some css to make it a fixed size. Perhaps this is causing the problem. Is there any way I can go about fixing it so both might work?

You can see the website here: http://www.filamentphotography.ca

Thank you again.