<style>
  body {
    background-color: black;
    color: #00FF00;
    font-family: monospace;
  }

  a {
    color: #00FF00;
    text-decoration: underline;
  }

  header, nav, footer {
    background-color: black;
    border-bottom: 1px solid #00FF00;
    padding: 1em;
  }

  nav a {
    margin-right: 1em;
  }

  h1, h2, h3 {
    color: #00FF00;
  }

  code, pre {
    background-color: #002200;
    color: #00FF00;
  }
</style>
