body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f7f7f7;
  color: #333;
}

header {
  background: #111;
  padding: 15px;
}

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

.hero {
  padding: 80px 20px;
  text-align: center;
  background: #4a90e2;
  color: white;
}

.content {
  padding: 40px 20px;
  max-width: 800px;
  margin: auto;
}

footer {
  text-align: center;
  padding: 20px;
  background: #111;
  color: white;
  margin-top: 40px;
}