body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f4f4f4;
  color: #333;
}
header {
  background: #003366;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header .logo {
  height: 60px;
}
nav a {
  color: white;
  text-decoration: none;
  margin-left: 20px;
}
.hero {
  text-align: center;
  padding: 80px 20px;
  background: #00BFFF;
  color: white;
}
.btn {
  padding: 10px 20px;
  background: #003366;
  color: white;
  text-decoration: none;
  border-radius: 5px;
}
.services, .why-choose, .main-content {
  padding: 40px 20px;
  background: white;
  margin: 20px;
  border-radius: 8px;
}
.service-box {
  margin-bottom: 20px;
}
footer {
  background: #003366;
  color: white;
  text-align: center;
  padding: 20px;
}