body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background: #f9f9f9;
  color: #333;
}

nav {
  background: #333;
  padding: 0.5rem;
  text-align: center;
}

nav a {
  color: #fff;
  margin: 0 1rem;
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

header {
  background-color: #004f7c;
  color: white;
  padding: 2rem 1rem;
  text-align: center;
}

main {
  padding: 2rem 1rem;
  max-width: 800px;
  margin: 0 auto;
}

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