html,
body {
  height: 100%;
  margin: 0;
}

body {
  text-align: center;
  align-items: center;
  display: flex;
}

main {
  width: 100%;
  height: 100%;
  background: #000000;
  font-family: sans-serif;
  justify-content: center;
  font-size: 2rem;
  color: #ffffff;
}

audio {
  display: none;
}