body {
  font-family: Arial, sans-serif;
  margin: 2rem;
  background-color: #f4f9f9;
  color: #2e3a59;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

h1 {
  color: #1e90ff;
}

main section {
  margin-bottom: 1.5rem;
}

footer {
  text-align: center;
  font-size: 0.9rem;
  color: #666;
  margin-top: 3rem;
  border-top: 1px solid #ccc;
  padding-top: 1rem;
}