html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #05080f;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

#stage {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(120% 80% at 50% 0%, #101b38 0%, #05080f 62%, #03050a 100%);
}

#game {
  display: block;
  touch-action: none;
  border-radius: 6px;
  box-shadow:
    0 0 0 1px rgba(90, 200, 255, 0.16),
    0 0 60px rgba(40, 150, 255, 0.18),
    0 24px 70px rgba(0, 0, 0, 0.75);
  image-rendering: auto;
}