html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

#gameCanvas {
  position: absolute;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: block;
  touch-action: none;
  outline: none;
  user-select: none;
  -webkit-user-select: none;
}