export function span(text) {
  const s = document.createElement('span');
  s.textContent = text;
  return s;
}
export function popup(text) {
  const d = document.createElement('div');
  d.className = 'popup';
  const s = span(text);
  d.appendChild(s);
  d.onanimationend = () => {
    d.remove();
  };
  document.body.appendChild(d);
}
export function shuffle(array) {
  for (let i = array.length - 1; i > 0; i--) {
    let j = Math.floor(Math.random() * (i + 1));
    [array[i], array[j]] = [array[j], array[i]];
  }
}