X-button of video URL overruled by navbar

I have created a sticky navbar, which (I think) stays to the front when I click into the video URL of my lightbox. So I cannot use the X-button anymore to come back into the page.

Any one can help?

Here is my site Read-Only: https://preview.webflow.com/preview/joost-vrouenraetss-supercool-project?utm_medium=preview_link&utm_source=designer&utm_content=joost-vrouenraetss-supercool-project&preview=31c7c556f49f46c9ab9a1571c97aad5e&pageId=5ea5c087c07d7847a53cda7d&mode=preview

Just set the z index of your nav to 2000 instead of 9999

Great, did it, works perfectly now, thank you !!!