html, body {
  margin: 0;
  padding: 0;
  height: 100%; /* Ensure the body takes up the full height of the viewport */
  display: flex; /* Use flexbox on the body */
  align-items: center; /* Vertically center the canvas */
  overflow: hidden;
  justify-content: center; /* Horizontally center the canvas */
}

canvas {
  display: block;
}