html,
body {
  margin: 0;
  height: 100%;
  background: #000;
  overflow: hidden;
  /* Touch (INPUT-02): no scrolling, zooming, text selection or long-press menus. */
  touch-action: none;
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

#screen {
  display: block;
  width: 100vw;
  height: 100vh;
  height: 100dvh; /* the visible height on phones, without the browser bars */
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}