* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  color: #333;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

header {
  background-color: rgba(255, 255, 255, 0.8);
  padding: 20px;
  text-align: center;
}

header img {
  max-width: 150px;
  height: auto;
}

nav {
  background-color: #0055a5;
  padding: 10px;
  text-align: center;
}

nav a {
  color: white;
  margin: 10px;
  text-decoration: none;
  font-weight: bold;
  display: inline-block;
}

section {
  padding: 20px;
  max-width: 1000px;
  margin: auto;
  background-color: rgba(255, 255, 255, 0.85);
}

footer {
  background-color: #003366;
  color: white;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
  clear: both;
}

h2 {
  color: #003366;
}

@media (max-width: 768px) {
  nav a {
    display: block;
    margin: 8px 0;
  }

  section {
    padding: 15px;
  }
}