html {
  height: 100%;
}

body {
  background-color: #000;
  margin: 0;
  display: flex;
  height: 100%;
}

canvas {
  background: white;
  margin: auto;
  /* width: min(calc(18vw + 18vh + 150px), 80vw, 80vh);
  height: min(calc(18vw + 18vh + 150px), 80vw, 80vh); */
  width: 100%;
  height: 100%;
}