Everything below starts hidden — scroll inside the panel and each group reveals as it enters. The first card also reports its own visibility.
↓ scroll down to reveal
onVisibilityChange Out of view · 0×
This card reports its own visibility
The engine emits a visibility event as the root enters and leaves the panel. Scroll it away and back to watch the counter climb.
Directional entrance
Horizontal reveals mirror automatically when the document direction is RTL.
99.9%
moves without fading — ideal for metrics
settles into place
Replays on every entry
Scroll past this card and back: it re-animates, while the groups above settle after their first reveal.
↑ scroll back up to replay