(() => {
  const background = document.getElementById("background");
  const logo = document.getElementById("logo").cloneNode(true);
  logo.id = "";
  const generateBackground = () => (new Array(Math.ceil(window.innerWidth / 100) * Math.ceil(window.innerHeight / 100)))
    .fill(null)
    .map(_ => logo.cloneNode(true))
    .forEach(l => {
      background.appendChild(l);
    });

  generateBackground();
})();