Seems like it's related to his book "All you need is HTML and CSS". There's two more example projects from his book: CSS-only Interactive, Swipeable Image Car

Seems like it's related to his book "All you need is HTML and CSS". There's two more example projects from his book: CSS-only Interactive, Swipeable Image Carousel https://matemarschalko.medium.com/css-only-interactive-swipeable-image-carousel-3a38afe3da58 https://matemarschalko.medium.com/css-only-interactive-swipe... Animated page scroll with HTML and CSS only https://levelup.gitconnected.com/animated-page-scroll-with-html-and-css-only-3788c4e2b853 https://levelup.gitconnected.com/animated-page-scroll-with-h...