<header>

<div class="navigation-wrapper">
  <h1><a href="/">{{site.author}}</a></h1>
  <ul>
    <li>
      <a href="https://github.com/{{site.github_username}}">
        <i class="fa fa-github"></i>
      </a>
    </li>
      <a href="https://twitter.com/{{site.twitter_username}}">
        <i class="fa fa-twitter"></i>
      </a>
    </li>
  </ul>
</div>

</header>