42 min read
The Senior Frontend Engineer's Field Guide to Advanced CSS and Tailwind v4
A verified, hands-on tour of CSS for senior engineers: the rendering pipeline, cascade layers and the counterintuitive !important inversion, subgrid, container queries, :has() as a state machine, the Popover API, scroll-driven animations, and Tailwind v4's Rust engine — with a real capstone app built, tested, and debugged in a live browser.