Transitions

Transitions.dev is Jakub Antalik's library of 43+ UI transitions for web apps, from dropdowns and modals to card resizes, each shown as a live preview, portable CSS and a self-contained React version. Everything reads from one scale of motion tokens for duration, easing, distance, blur and scale, which a coding-agent skill and a paid agent that scores and fixes a codebase's motion also use. Designers and engineers open it to make an app's motion consistent rather than ad hoc.