body {
  background-color: #111;
  color: #fff;
}

nav {
  background-color: #222;
  padding: 10px;
}
nav a {
  color: #fff;
  text-decoration: none;
  padding: 5px 10px;
}
nav a:hover {
  background-color: #333;
}
footer {
  background-color: #222;
  color: #fff;
  text-align: center;
  padding: 10px;
}