<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <title>Zulip</title>
    </head>
    {% if has_preheader %}
    <span style="display:none !important;
      visibility:hidden;
      color:transparent;
      mso-hide:all;
      font-size:1px;
      color:hsl(0, 0%, 100%);
      line-height:1px;
      max-height:0px;
      height:0px;
      max-width:0px;
      width:0px;
      opacity:0;
      overflow:hidden;">
        {% block preheader %}{% endblock %}
    </span>
    {% endif %}
    {% block content %}{% endblock %}
    {% block manage_preferences %}{% endblock %}
</html>
