CSS

scroll timeline css

@scroll-timeline moveTimeline {
  source: auto;
  orientation: vertical;
  scroll-offsets: 0px, 500px;
}

@scroll-timeline element-move {
  source: auto;
  orientation: vertical;
  scroll-offsets: selector(#myElement) start 0, selector(#myElement) end 0;
}

#container {
  height: 300px;
}

#square {
  background-color: deeppink;
  width: 100px;
  height: 100px;
  margin-top: 100px;
  animation-name: rotateAnimation;
  animation-duration: 3s;
  animation-direction: alternate;
  animation-timeline: squareTimeline;
}

@scroll-timeline squareTimeline {
  source: selector("#container");
  orientation: "vertical";
  scroll-offsets: 0px, 300px;
}

@keyframes rotateAnimation {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}