html, body {
  margin: 0;
  height: 100%;
  background: #120c24;
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
}

#mute {
  position: fixed;
  right: max(10px, env(safe-area-inset-right));
  bottom: max(10px, env(safe-area-inset-bottom));
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  font-size: 18px;
  cursor: pointer;
}

canvas {
  display: block;
  background: #1b1236;
  border-radius: 12px;
  box-shadow: 0 0 40px rgba(140, 90, 255, 0.35);
}