It's early days in the project, but you should be able to put a CSS file on the CDN and use it the same way. I'm calling it CSS but it isn't not "CSS". It's technically a CSS-like DSL that runs in a custom player on web and mobile. It doesn't use the DOM. The difference would be authoring new animations as there is no real integration with any design tools yet. I have a PoC level Figma plugin. The way to create new animations at this stage would be converting existing Lotties, SVGs, or prompting new animations with the skill or Copilot feature.