body {
  font-family: Arial, sans-serif;
  background-color: #f9f9f9;
  color: #333;
  margin: 0;
  padding: 0;
}
header {
  background-color: #003366;
  color: white;
  padding: 1em;
  text-align: center;
}
nav a {
  color: white;
  text-decoration: none;
  margin: 0 10px;
}
nav a:hover {
  text-decoration: underline;
}
section {
  padding: 20px;
  max-width: 1000px;
  margin: auto;
  background: white;
}
footer {
  text-align: center;
  padding: 1em;
  background-color: #003366;
  color: white;
}
