Can't get Sticky sub nav to work

Hey guy’s

I’m having a problem with a Sticky item not working. I don’t know what I’m doing wrong. Can someone have a look please. It’s the Sub Nav that I want to stick to the top of the browser when the user scrolls past.

Thanks

Jason

Share link: https://preview.webflow.com/preview/europump-2020?utm_medium=preview_link&utm_source=dashboard&utm_content=europump-2020&preview=37d08b1cb72e416d436d3e0f21f1e547&mode=preview

FIXED: Someone helped me on another group. I had to move the sticky element out of the header div.

Thanks