Making a Real-Time Clock With a Conic Gradient Face

Every year, I create a little demo right before the holidays as a CSS greeting card. This year is no different. To celebrate the end of the year and all those new amazing features that came into CSS, I decided to let myself go a little with new CSS techniques. A sort of recap of things I learned and put them in one little CodePen. This time, I’m combining scroll-driven animations, anchoring, and @property in CSS.

How can I animate from 0 to auto? I have a fixed width and want it to transition to the width set by its children. How do I do that? These CSS questions have been asked many times on platforms such as Stackoverflow, and I’ve certainly done some searching for those exact questions. I can’t count the number of max-width hacks or JavaScript solutions I’ve used to transition from 0 to auto. No more! I’m done, and for now, I’m going full progressive enhancement. In this article, I’d like to cover some of the benefits you get from adding the new interpolate-size property in your CSS Reset.