function createAndAnimate(part) {
  var randomColor = Math.floor(Math.random()*16777215).toString(16);
  var element = document.createElement('pre');
  element.textContent = part;
  element.style.color = '#' + randomColor;
  document.body.appendChild(element);
  element.animate([
    {transform: 'rotate(0deg)'},
    {transform: 'rotate(360deg)'}
  ], {
    duration: 5000,
    iterations: Infinity,
    delay: Math.random() * 5000,
  });
}
 
document
    .documentElement
    .outerHTML
    .split('\n')
    .forEach(createAndAnimate);