body {
  margin: 0;
  text-align: center;
  font-family: sans-serif;
  background: #f5f1e6;
}

canvas {
  display: block;
  margin: 0 auto;
  background: #e8dfc8;
}

button {
  padding: 15px;
  margin: 20px;
  font-size: 18px;
}