CSS is render blocking. The browser will never paint anything on screen until it’s downloaded and parsed in to a css object model. Unless you’re hyper tuning t

CSS is render blocking. The browser will never paint anything on screen until it’s downloaded and parsed in to a css object model. Unless you’re hyper tuning the page load performance in some specific way I think CSS is usually best served as a separate asset with a very generous cache time. If the entirety of the CSS is extremely minimal it can make sense to in-line it too. Especially if you can get everything in at under 14kb. (Initial TCP window size)