title: Sticky top menu in prestashop
body: <p>I'm using a prestashop premium theme which has a sticky menu on scroll. On top of this menu, I added another module for a menu which is not sticky. I'm trying to make this second menu that I added to be sticky but I'm not sure how.
  I attached screenshots to show you what I mean.
  The first image shows both menus and the second image show the menu that it's sticky right now. So, I want both to be sticky on scroll.</p>
  
  <p>Full menu:</p>
  
  <p><a href="https://i.stack.imgur.com/xJT6U.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xJT6U.png" alt="enter image description here"></a></p>
  
  <p>Current sticky menu
  <a href="https://i.stack.imgur.com/97iiE.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/97iiE.png" alt="enter image description here"></a></p>
  
  <p>I used this module to add the top menu which is not sticky:</p>
  
  <pre><code>{if $MENU != ''}
      &lt;!-- Menu --&gt;
      &lt;div id="block_top_menu" class="sf-contener clearfix col-lg-12"&gt;
          &lt;div class="cat-title"&gt;{l s="Categories" mod="blocktopmenu"}&lt;/div&gt;
          &lt;ul class="sf-menu clearfix menu-content"&gt;
              {$MENU}
              {if $MENU_SEARCH}
                  &lt;li class="sf-search noBack" style="float:right"&gt;
                      &lt;form id="searchbox" action="{$link-&gt;getPageLink('search')|escape:'html':'UTF-8'}" method="get"&gt;
                          &lt;p&gt;
                              &lt;input type="hidden" name="controller" value="search" /&gt;
                              &lt;input type="hidden" value="position" name="orderby"/&gt;
                              &lt;input type="hidden" value="desc" name="orderway"/&gt;
                              &lt;input type="text" name="search_query" value="{if isset($smarty.get.search_query)}{$smarty.get.search_query|escape:'html':'UTF-8'}{/if}" /&gt;
                          &lt;/p&gt;
                      &lt;/form&gt;
                  &lt;/li&gt;
              {/if}
          &lt;/ul&gt;
      &lt;/div&gt;
      &lt;!--/ Menu --&gt;
  {/if}
  </code></pre>
  
  <p>How can I make this menu sticky? Thanks a lot.</p>