add new div

themes/custom/envigo/templates/navigation/menu--main.html.twig

@@ -31,6 +31,7 @@
   {% if items %}
     {% if menu_level == 0 %}
       <div class="h_menu_c_b">
+      <div class="h_m_mob_c">
       <ul class="h_nav_main">
     {% else %}
       
@@ -56,6 +57,7 @@
     {% endfor %}
     </ul>
     </div>
+    </div>
   {% endif %}
 {% endmacro %}