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

header {
  background-color: #f8f9fa;
  padding: 1rem;
  text-align: center;
}

nav a {
  margin: 0 1rem;
  text-decoration: none;
  color: #007bff;
}

section {
  padding: 2rem;
}

footer {
  background-color: #f8f9fa;
  text-align: center;
  padding: 1rem;
  position: fixed;
  bottom: 0;
  width: 100%;
}