:root {
  --vid-w: 92vmin;
}

html, body {
  height: 100%;
  margin: 0;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}

#frame {
  width: var(--vid-w);
  height: var(--vid-w);
}

canvas {
  width: 100%;
  height: 100%;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: #000;
  display: block;
  border-radius: 6px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6);
}