Theo Soti is a French developer and CSS educator focused on the philosophy of using modern CSS to its full extent — particularly the patterns where modern CSS replaces what used to require JavaScript.
His CourseFlix listing carries You Don't Need JavaScript — A Practical CSS eBook — a structured treatment of the modern CSS features (container queries, has() selector, the dynamic viewport units, scroll-driven animations, view transitions) that have made many JavaScript-based UI patterns unnecessary.
Material is paid and aimed at front-end developers ready to push modern CSS as a real engineering tool. For broader content, see CourseFlix's CSS category page.
