body {
  background-color: black;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

canvas {
  background-color: #30c0df;
  border: 2px solid black;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  display: block;
}