Created with CodeSandbox
This is a project from girls.js workshops - https://girlsjs.github.io/kurs/slides/index-en.html#/. Original demo version: https://girlsjs.github.io/kurs/gallery/demo.html.
About girls.js - free PL workshops for women to encourage them in joining to IT and learn JavaScript :D https://github.com/girlsjs, https://girlsjs.pl/
There are a lot of comments in my .js file because I didn't want to remove my progress :)
Code created in https://codesandbox.io. The HTML and CSS files were already given, I only edited a little of CSS :)