*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: #000;
  user-select: none;
  -webkit-user-select: none;
}

#game-container {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #000;
}

#game-canvas {
  display: block;
  touch-action: none;
  cursor: crosshair;
}