[NSFW] BUY NOW BUTTON

Over the last 2 years I had various CSS added, but i just noticed that the buy now button jumps around and is positioned in different place on different products . This seems to only happen when clicking on the items in the product page listed under “related products”

https://www.sexualwellbeingonline.co.uk/product/remote-control-thrusting-rabbit-pearl-vibrator/

Please advise.

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