How to make a curtain like in Instagram Stories in JavaScript?

Question

JavaScript

Hello! I'm creating a Mubert generative music service, now I'm making up a new page and I need help:
Help me make up or find a solution: I need the functionality of opening a curtain, like in insta stories or on a reference:
https://m.zara.com/ru/en/ double-breasted-coat-p059... This
site only works on mobile devices.
Swipe the curtain up with your finger and the curtain itself raises the content by gluing it to the top of the screen.