body {
  font-family: Helvetica, Arial, sans-serif;
  color: #ccc;
  background-color: #222;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
}

canvas {
  border-radius: 1rem;
  /* border: 4px solid rgba(0, 0, 0, 0.2); */
}