body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  text-align: center;
  background-color: #f4f4f4;
}

header {
  background-color: #333;
  color: white;
  padding: 1rem 0;
}

main {
  padding: 2rem;
}

.sample-image {
  max-width: 300px;
  margin-top: 1rem;
}

footer {
  background-color: #eee;
  padding: 1rem;
  margin-top: 2rem;
}