It is a project for watching photos, by scrolling down, uploaded from Unsplash.com dynamically. And the feed looks infinite, when you scroll down, the new images upload again and again.
The project is available at the link below: https://tol8901.github.io/infinite-scroll/
After opening the link we see an animation during the initial loading of the web-page:
When the web-page is initially loaded:
When scrolling down: