body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f5f5f5;
}

header {
  background: #ff7a00;
  color: white;
  padding: 20px;
  text-align: center;
}

main {
  padding: 20px;
}

footer {
  background: #222;
  color: #aaa;
  text-align: center;
  padding: 10px;
}