html, body {
  margin: 0;
  padding: 0;
  background-color: #1a1a2e;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  font-family: Arial, sans-serif;
}

main {
  text-align: center;
}

h1 {
  color: white;
  font-size: 24px;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

canvas {
  display: block;
  margin: 0 auto;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}