border-radius support represented the crowning, final achievement of web browser technology.
But all of a sudden, things started picking up. Flexbox came out, representing the first new and widely adopted layout method in over a decade. And Grid came shortly after that, sweeping away years of hacky grid frameworks into the gutter of bad CSS practices.
And now it’s 2019, and the Flexbox Cheatsheet tab I’ve kept open for the past two years has now been joined by a Grid Cheatsheet, because no matter how many times I use them, I still need to double-check the syntax. And despite writing a popular introduction to CSS-in-JS, I still lazily default to familiar Sass for new projects, promising myself that I’ll “do things properly” the next time.