.star {
display: inline-block;
font-size: 3em;
}
const star = document.querySelector('.star');
const button = document.getElementById('button');
const starAnime = star.animate([
{ transform: 'rotate(360deg)' },
], {
duration: 1000,
iterations: Infinity,
});
button.addEventListener('click', () => {
starAnime.playState === 'running' ?
starAnime.pause() :
starAnime.play();
});