athena.fb-infra.uk/page-blocks/nav-menu.php

    <div id="menubar_hamburger" class="hide_micro">
      <button class="sidebar_control" id="sidebar_open_short" onclick="sidebarOpen()">&#9776;</button>
      <button class="sidebar_control" id="sidebar_close_short" onclick="sidebarClose()">&times;</button>
    </div>
    <div id="sidebar">
      <a href="/">Home</a>
      <a href="/help.php">Help</a>
      <a href="/issue.php">Report Issue</a>
    </div>