body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 2rem;
  background-color: #f8f8f8;
  color: #333;
}

main {
  max-width: 800px;
  margin: auto;
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1, h2 {
  color: #222;
}