* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  background: #000;
}

body {
  touch-action: none;
}

#game-shell {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: none;
}

#game-canvas {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100vw;
  max-height: 100vh;
  background: #111;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}