body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

header {
  background: #007bff;
  color: white;
  text-align: center;
  padding: 2rem 1rem;
}

section {
  padding: 2rem 1rem;
  margin: 1rem;
  border-bottom: 1px solid #ddd;
}

footer {
  text-align: center;
  padding: 1rem;
  background: #333;
  color: white;
}