Transitions.dev Twelve portable CSS transitions, each namespaced under selectors with semantic CSS custom properties. Drop-in: paste the snippet, wire the documented HTML hooks, done. No framework dependencies, no demo-specific markup, and every snippet ships a guard. Quick reference | Transition | When to use | Reference | | --- | --- | --- | | Card resize | Tween a container's width or height when its layout state changes. | 01-card-resize.md | | Number pop-in | Re-enter each digit with a blurred slide when a number updates. | 02-number-pop-in.md | | Notification badge | Slide a small badge…