html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #000;
  overflow: hidden;
  overscroll-behavior: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

body {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #e8dcc0;
  font-family: "Courier New", Courier, monospace;
}

#game {
  display: block;
  /* fit inside the window keeping 16:9 */
  width: min(100vw, 177.7778vh);
  height: min(100vh, 56.25vw);
  background: #0d0b12;
  image-rendering: -moz-crisp-edges;
  image-rendering: crisp-edges;
  image-rendering: pixelated;
  touch-action: none;
  outline: none;
}

@supports (height: 100dvh) {
  #game {
    width: min(100vw, 177.7778dvh);
    height: min(100dvh, 56.25vw);
  }
}

noscript {
  position: absolute;
  top: 45%;
  width: 100%;
  text-align: center;
}