html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: Arial, sans-serif;
  background: #0f1117;
}

#loading {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  color: white;
  font-size: 22px;
  background: radial-gradient(circle at center, #202638, #0f1117 70%);
}