body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}

header {
  background-color: #222;
  color: #fff;
  padding: 1rem;
  text-align: center;
}

header img {
  display: block;
  margin: 0 auto 10px;
}

nav a {
  color: #fff;
  margin: 0 10px;
  text-decoration: none;
}

main {
  padding: 2rem;
}

footer {
  background-color: #f4f4f4;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
}