JSFiddle - React, Tailwind, and code Playground

by Dogbert

HTML

<div>Hello!</div>

CSS

div {
  /* transition: opacity 3s, margin-top 4s; */
  opacity: 0;
  margin-top: 100px;
  /* animation-name: spin; */
  /* animation-duration: 5s; */
  display: inline-block;
}

.animate {
  opacity: 1;
  margin-top: 0;
}

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

JavaScript

const div = document.querySelector('div');
div.addEventListener('transitionend', console.log)
div.addEventListener('animationend', console.log)
div.classList.add('animate');
const style = getComputedStyle(div);
console.log(style.transition);
console.log(style.animation);