How to do it

Question

https://code.sololearn.com/Wqj2SfqPs5OS/?ref=app

Answer 1

You have comments in code explaining what every part is doing.

But to understand this you will need to know languages used, so I suggest you to complete your html course first, then css, and learn javascript.
For this code javascript is important(topic = events in js, mousemove and touchmove)