body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f6f8;
  color: #333;
}
header {
  background: #0a66c2;
  color: white;
  padding: 20px;
  text-align: center;
}
.hero {
  padding: 30px;
  text-align: center;
}
.btn {
  display: inline-block;
  margin: 10px;
  padding: 12px 20px;
  background: #0a66c2;
  color: white;
  text-decoration: none;
  border-radius: 5px;
}
.btn.call {
  background: #28a745;
}
section {
  padding: 20px;
}
footer {
  background: #222;
  color: #ccc;
  text-align: center;
  padding: 10px;
}