body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f7f9fc;
  color: #333;
}
header {
  background: #0d6efd;
  color: white;
  padding: 40px 20px;
  text-align: center;
}
section {
  padding: 30px 20px;
  max-width: 1000px;
  margin: auto;
}
footer {
  background: #222;
  color: #ccc;
  text-align: center;
  padding: 15px;
}