body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background: #f4f4f4;
  color: #333;
}

header {
  background: #2d6a4f;
  color: #fff;
  padding: 20px;
  text-align: center;
}

nav a {
  margin: 0 10px;
  color: #d8f3dc;
  text-decoration: none;
}

section {
  padding: 20px;
  background: #fff;
  margin: 10px auto;
  max-width: 800px;
  border-radius: 5px;
}

footer {
  text-align: center;
  padding: 10px;
  background: #1b4332;
  color: white;
}