body {
  font-family: "Georgia", serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  color: #333;
}
header {
  background-color: #004080;
  color: white;
  padding: 1rem 2rem;
  text-align: center;
}
main {
  max-width: 800px;
  margin: 2rem auto;
  padding: 1rem;
  background: white;
  border-radius: 8px;
}
h1, h2 {
  color: #004080;
}
nav {
  text-align: center;
  margin: 1rem 0;
}
nav a {
  margin: 0 10px;
  text-decoration: none;
  color: #004080;
  font-weight: bold;
}
footer {
  text-align: center;
  font-size: 0.9em;
  color: #666;
  margin-top: 2rem;
  padding: 1rem;
}