body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background: #f4f4f9;
  color: #333;
}
header {
  background: #2d2f36;
  color: white;
  padding: 20px 0;
  text-align: center;
}
header h1 {
  margin: 0;
  font-size: 2.5rem;
}
nav a {
  margin: 0 15px;
  color: #ffcc00;
  text-decoration: none;
}
section {
  padding: 40px;
  max-width: 900px;
  margin: auto;
}
h2 {
  border-bottom: 2px solid #ccc;
  padding-bottom: 10px;
  margin-bottom: 20px;
}
footer {
  text-align: center;
  background: #2d2f36;
  color: white;
  padding: 15px;
  margin-top: 30px;
}