Gets stuck when scrolling on products with phone (Dawn theme)

[Alors]

Hello, the issue im facing is that when i scroll on the home page from my phone and hit a product during the scrolling it gets stuck on the product image as if you can scroll in there aswell. Difficult to explain exactly in words and its not allowing me to upload short video due to mp4 format... i can send it at request.

Any help appreciated, thank you!

[Alors]

Why isnt it possible to upload my video?? It says "The file type (.mp4) is not supported. Valid file types are: csv."