body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 1rem;
  background-color: #fff;
}

canvas {
  border: 1px solid #000;
}

button {
  border: 1px solid steelblue;
  background-color: transparent;
  padding: 0.5rem 1.5rem;
  border-radius: 3px;
  cursor: pointer;
  background-color: #0095dd;
  color: white;
}

button:disabled {
  cursor: not-allowed;
  background-color: #0093dd7a;
}