17 Jan Posted January 17, 2023 by Nolan Lawson in performance, Web. 2 Comments A few months ago, I gave a talk on CSS performance at performance.now in Amsterdam. The recording is available online: (You can also read the slides.) This is one of my favorite talks I’ve ever given. It was the product of months (honestly, years) of research, prompted by a couple questions: What is the fastest way to implement scoped styles? (Surprisingly few people seem to ask this question.) Does using shadow ...