body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #121212;
  color: #eee;
}

header {
  background: #222;
  padding: 1em;
  text-align: center;
}

nav a {
  margin: 0 1em;
  color: #eee;
  text-decoration: none;
}

nav a:hover {
  color: #00bfff;
}

main {
  padding: 2em;
  max-width: 800px;
  margin: auto;
}

h1, h2 {
  color: #00bfff;
}

footer {
  text-align: center;
  padding: 1em;
  background: #222;
  margin-top: 2em;
}