how to animate letters in css code example

Example 1: text animation css

<h1 class="ml6">
  <span class="text-wrapper">
    <span class="letters">Beautiful Questions</span>
  </span>
</h1>

<script src="https://cdnjs.cloudflare.com/ajax/libs/animejs/2.0.2/anime.min.js"></script>

Example 2: text animation css

// Wrap every letter in a span
var textWrapper = document.querySelector('.ml6 .letters');
textWrapper.innerHTML = textWrapper.textContent.replace(/\S/g, "<span class='letter'>$&</span>");

anime.timeline({loop: true})
  .add({
    targets: '.ml6 .letter',
    translateY: ["1.1em", 0],
    translateZ: 0,
    duration: 750,
    delay: (el, i) => 50 * i
  }).add({
    targets: '.ml6',
    opacity: 0,
    duration: 1000,
    easing: "easeOutExpo",
    delay: 1000
  });