html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #050509;
  overflow: hidden;
}

#app {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
}

#game {
  width: min(100vw, calc(100vh * 4 / 3));
  height: min(100vh, calc(100vw * 3 / 4));
  image-rendering: pixelated;
  outline: none;
}