Disable mobile menu toggle

Hey everyone,

The menu of my website switches to a ‘mobile version’ on a screen smaller than 1024px.

I would like to always have the full-screen menu, even on mobile.

The theme I use doesn’t give this as an option, but it is important to me.
(I can disable the mobile menu with the theme, but not keep the full-screen menu on a smaller screen)

Could someone maybe help me with that? Is there a way to perhaps add custom CSS so the full-scene menu will always be visible?

If someone can help me thank you so much!

The page I need help with: [log in to see the link]