body {
  font-family: Arial, sans-serif;
  text-align: center;

  background-color: rgb(16, 8, 33);
  color: white;
  margin: 0;
  padding: 0;
}
canvas {
  border: 1px solid white;
  display: block;
  margin: 20px auto;
  background-color: black;
}
.center-div {
  display: flex;
  align-items: center;
  justify-content: center;
}