body {
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  background-color: #f9f9f9;
  color: #333;
}
header {
  background: url('images/banner.jpg') no-repeat center center;
  background-size: cover;
  height: 250px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.6);
}
header img {
  max-height: 80px;
  margin-bottom: 10px;
}
nav {
  background-color: #006699;
  display: flex;
  justify-content: center;
  padding: 15px;
}
nav a {
  color: white;
  margin: 0 20px;
  text-decoration: none;
  font-weight: bold;
}
nav a:hover {
  color: #ffcc00;
}
section {
  padding: 40px;
  max-width: 1000px;
  margin: auto;
}
h2 {
  color: #004466;
  border-bottom: 2px solid #ff6600;
  padding-bottom: 5px;
}
footer {
  background-color: #004466;
  color: white;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
}
iframe {
  width: 100%;
  height: 400px;
  border: none;
}
form {
  background: #f0f0f0;
  padding: 20px;
  border-radius: 8px;
}
form input, form textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 4px;
}
form button {
  background-color: #ff6600;
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}
form button:hover {
  background-color: #cc5200;
}