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The Cascade is a blog about the past, present, and future of CSS.

Howdy—Robin Rendle here. I started this side project back in May because I wanted a dedicated place to learn-out-loud about all the exciting things that’s happening in the world of CSS.

And so many exciting things are happening!

Right now we’re living through a golden age: what was once a language that was easy to make fun of has transformed into a serious and expressive toolkit for building visual interfaces. Although making fun of CSS was always lame, today, in 2024, it shows a deep lack of curiosity. The train has left the station. CSS rules. Get with the program.

But this didn’t happen randomly. Thousands of dedicated, smart folks have worked tirelessly over decades to get us to this point where CSS is—in this humble blogger’s opinion—the best design tool ever made. Every day some new super power is unlocked for us in browsers and with each new power the web becomes a better place, thanks to them.

So this blog exists to keep me in the loop and somewhat up to date with everything that’s possible with CSS but also it’s a reminder to celebrate the people doing the hard work building these tools for us.

You can subscribe to The Cascade via RSS, shoot me an email if you absolutely must, or follow the feed. This project is directly supported by readers and the membership program.

Right now the newsletter is taking a bit of a break whilst I figure out a healthy publishing cadence, but you can subscribe below:

Motion blur

Oooooh here’s something I’ve never thought about when it comes to CSS: motion blur! Adam Argyle wrote this back in 2019 (!) but it still feels new and exciting to me:

Professional polish of motion graphics often includes the application of motion blur. In most cases, it's a boolean toggled at the layer level, that then tells the engine to set a blur amount based on the speed of the pixels. This effect makes animations much closer to real life, among other nice benefits. CSS currently is incapable of such an effect. Instead, a strobing, ghosted type effect is often what we get instead.

I like this proposal, too:

.animated-layer {
  animation: rotate .5s linear infinite;
  motion-rendering: blur;
  motion-shutter-angle: 180deg;
}

@keyframes rotate {
  to {
    transform: rotate(1turn);
  }
}

Also, reading the comments on this thread is fun and reveals just how complex the standards process is for adding anything new to CSS.