body {
  margin: 0;
  font-family: Arial, sans-serif;
  text-align: center;
  background: linear-gradient(#87CEEB, #ffffff);
  color: #333;
}

header {
  padding: 50px 20px;
}

h1 {
  font-size: 40px;
}

section {
  padding: 40px 20px;
}

.btn {
  display: inline-block;
  margin-top: 15px;
  padding: 12px 24px;
  background: #28a745;
  color: white;
  text-decoration: none;
  border-radius: 8px;
}

.btn:hover {
  background: #218838;
}

footer {
  padding: 20px;
  background: #f2f2f2;
}