HTML5 Dev Conf: Webkit in Your Living Room – Netflix – YouTube.
This is a fantastic look at the detail you need to mind when writing modern CSS. I can near guarantee that Netflix delivers WebKit-based UI to a wider variety of platforms than we do, each requiring considerations we normally don’t have to worry about.
When delivering animations to a lower spec hardware for example, there are huge differences to the various approaches we take every day to accomplish the very same task with little to no noticeable difference. There’s a good chance the code we view as quite optimized would behave extraordinarily different on alternative hardware.