html, body {
  margin: 0; padding: 0; height: 100%;
  background: #06060f;
  overflow: hidden;
  overscroll-behavior: none;
  -webkit-user-select: none; user-select: none;
}
#wrap {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
#game {
  width: 100vw; height: calc(100vw * 9 / 16);
  max-height: 100vh; max-width: calc(100vh * 16 / 9);
  display: block;
  image-rendering: auto;
  touch-action: none;
  cursor: default;
}