body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background-color: #4CAF50;
  color: white;
  padding: 1rem;
}

header nav ul {
  list-style: none;
  display: flex;
  justify-content: space-around;
}

header nav ul li a {
  color: white;
  text-decoration: none;
}

.hero {
  text-align: center;
  padding: 2rem;
  background: #f4f4f4;
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: #333;
  color: #fff;
}