The @property CSS at-rule is part of the CSS Houdini umbrella of APIs. It allows developers to explicitly define their CSS custom properties, allowing for property type checking and constraining, setting default values, and defining whether a custom property can inherit values or not.| MDN Web Docs
Style queries allow developers to query a parent element's style values using the @container rule. In Chrome 111, style queries for CSS custom properties are landing stable. Learn how to get started with them.| Chrome for Developers
I bet all of you have seen that little trick where an SVG path is animated to look like it's drawing itself. It's super cool. Jake Archibald pioneered the| CSS-Tricks