If you thought 2024 was packed with amazing new CSS, well, you're right. But so is 2025 and it keeps looking bright. Check out our list of the best stuff with easy-to-reference examples.

We don’t have to choose between px and rem for spacing. There are many articles and established CSS best-practices that rely on determining the correct or best units to use. Now that comparison functions are well supported in CSS, we don’t have to choose.

Creating motion can be tricky. Too much and it’s distracting. Too little and a design feels flat. Ambient animations are the middle ground — subtle, slow-moving details that add atmosphere without stealing the show. In this article, web design pioneer Andy Clarke introduces the concept of ambient animations and explains how to implement them.

Hope this gives you the push you might need to use overflow: clip a little more frequently. It’s been widely available for over 5 years now, so it’s pretty safe to use!

CSS has been on fire lately, with tons of great new features. @starting-style is an interesting one; it allows us to use CSS transitions for enter animations, something previously reserved for CSS keyframe animations. But is the juice worth the squeeze?