using css javascript for animation code example

Example 1: js start css animation

const element = document.querySelector(".yourElementClass");
const btn = document.querySelector(".yourButtonClass");

btn.onclick = () => {
  element.style.animation = "YourAnimation 1s linear infinite"
}
// you will need js to start an animation, Don't forget to declare it using css

Example 2: javascript css animation

Personally https://animejs.com/