body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}
header {
  background: #1bbd36;
  color: white;
  padding: 15px;
  text-align: center;
}
header nav a {
  color: white;
  margin: 0 10px;
  text-decoration: none;
}
.hero {
  padding: 40px;
  text-align: center;
  background: #eaffea;
}
.features {
  padding: 20px;
}
footer {
  text-align: center;
  background: #1bbd36;
  color: white;
  padding: 10px;
  margin-top: 20px;
}