Add video background to image carousel on 7.1

Site URL: https://conkered2021.squarespace.com

Hi there, 

I'm looking to create an image slideshow where one of the images has a video playing in the background. Is this possible at all? 

conkered2021.squarespace.com
psw: pizzaforever

I'd like a video (youtube) to be playing on loop behind the bottle image only - an not behind the following images in the slideshow. 

Any help is much appreciated! 
Thanks 🙏