body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: #f5f5f5;
  color: #333;
}
.container {
  width: 90%;
  max-width: 1000px;
  margin: auto;
  padding: 20px 0;
}
header {
  position: relative;
  color: #003366;
  text-align: center;
}
.banner {
  width: 100%;
  max-height: 250px;
  object-fit: cover;
}
.logo {
  width: 80px;
  margin-top: -50px;
  background: white;
  padding: 5px;
  border-radius: 10px;
}
nav {
  background-color: #003366;
  padding: 10px 0;
}
nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}
nav ul li {
  margin: 0 15px;
}
nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}
main section {
  margin: 40px 0;
}
main h2 {
  color: #004080;
}
footer {
  background-color: #002244;
  color: white;
  text-align: center;
  padding: 20px 0;
  font-size: 0.9em;
}