html, body {
  background-color: #000000;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  overflow: hidden;
  height: 100vh;
  align-items: center;
  justify-content: center;
  
}

canvas {
  display: block;
  object-fit: contain;
  max-width: 100vw !important;
  max-height: 100vh !important;
}