html, body {
  width: 100%; height: 100%; margin: 0; overflow: hidden;
  background: #090909; color: #f4e9d8;
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  touch-action: none; overscroll-behavior: none;
  -webkit-user-select: none; user-select: none;
}
canvas {
  display: block; width: 100vw; height: 100dvh;
  touch-action: none; cursor: crosshair;
}