Hydro/packages/ui-default/templates/partials/header_mobile.html

<div class="header--mobile">
  <div class="row"><div class="columns clearfix">
    <div class="float-left">
      <a class="header--mobile__domain" href="/" target="_self">&nbsp;</a>
    </div>
    <div class="float-right">
      {% include "partials/hamburger.html" %}
    </div>
  </div></div>
</div>