body {
  font-family: sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.6;
  background: #fff;
  color: #333;
}

header {
  background: #222;
  color: #fff;
  padding: 10px;
}

header h1 {
  margin: 0;
}

nav ul {
  list-style: none;
  padding: 0;
  display: flex;
  gap: 10px;
}

nav ul li {
  display: inline;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
}

main {
  padding: 20px;
}

footer {
  background: #eee;
  text-align: center;
  padding: 10px;
  font-size: 0.9em;
}