body {
  font-family: 'Courier New', Courier, monospace;
  background-color: #0d0d0d;
  color: #00ffff;
  padding: 20px;
  line-height: 1.6;
}

a {
  color: #ff00ff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header, nav, footer {
  margin-bottom: 20px;
}