body {
  /* overflow: hidden; */
  margin: 0;
  justify-content: center;
  align-items: center;
  display: flex;
}

canvas {
  padding: 0;
  margin: auto;
  display: block;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
}