body {
  font-family: Arial, sans-serif;
  max-width: 900px;
  margin: 0 auto;
  padding: 30px;
  line-height: 1.6;
  color: #222;
}

header {
  margin-bottom: 30px;
}

nav {
  margin-bottom: 30px;
  padding: 10px 0;
  border-top: 1px solid #ccc;
  border-bottom: 1px solid #ccc;
}

nav a {
  margin-right: 20px;
  text-decoration: none;
  color: #005c99;
  font-weight: bold;
}

section {
  margin-bottom: 50px;
}

img {
  max-width: 100%;
  height: auto;
  border: 1px solid #ddd;
}