talk/docs/_includes/header.html

<header class="header">
  <form class="search d-flex align-items-center">
    <input type="search" class="form-control" id="search-input" placeholder="Search documentation..." aria-label="Search for..." autocomplete="off">
    <nav class="header__nav">
      <a target="_blank" alt="Coral Project Github" href="https://github.com/coralproject/">Github</a>
      <a target="_blank" alt="Coral Project Docker Hub" href="https://hub.docker.com/r/coralproject/">Docker</a>
      <a target="_blank" alt="Coral Project Roadmap" href="https://www.pivotaltracker.com/n/projects/1863625">Roadmap</a>
      <a target="_blank" alt="Coral Project Google Group" href="https://groups.google.com/forum/#!forum/coral-talk-users">Google Group</a>
      <a href="#" alt="Toggle Sidebar" id="sidebar-toggle">{% include images/hamburger.svg %}</a>
    </nav>
  </form>
</header>