Ripple.
An expanding ring acknowledges an activation.
See the movement
One intentional triggerPlayback starts only when you request it. Stop returns to the still illustration.
What it does
A ring grows outward and fades from a control. The preview radiates from the center; a pointer-origin ripple may instead begin at the actual activation point.
Timing curve
ease-outDefault duration700ms
RepetitionOnce per trigger
Make the motion useful
Choose an effect that supports the component’s purpose. Keep the final state clear, preserve focus and reading order, and pair important feedback with a visible message.
CSS animation reference