Выпадающий каталог

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE xsl:stylesheet SYSTEM "lang://695">
<xsl:stylesheet version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:hostcms="http://www.hostcms.ru/"
   exclude-result-prefixes="hostcms">
   <xsl:output xmlns="http://www.w3.org/TR/xhtml1/strict" doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN" encoding="utf-8" indent="yes" method="html" omit-xml-declaration="no" version="1.0" media-type="text/xml"/>
   
   <!-- МагазинГруппыТоваровМеню -->
   
   
   <xsl:template match="/shop">
      <div class="cd-dropdown-wrapper">
         <a class="cd-dropdown-trigger" href="#">Каталог</a>
         
         <nav class="cd-dropdown">
            <h2>Каталог</h2>
            <a href="#" class="cd-close">Закрыть</a>
            
            <ul class="cd-dropdown-content">
               <xsl:apply-templates select="shop_group" />
            </ul>
         </nav>
      </div>
   </xsl:template>
   
   <xsl:template match="shop_group">
      <li>
         <xsl:variable name="hasChildren" select="count(shop_group)" />
         <xsl:if test="$hasChildren">
            <xsl:attribute name="class">has-children</xsl:attribute>
         </xsl:if>
         
         <a href="{url}"><xsl:value-of select="name"/></a>
         
         <xsl:if test="$hasChildren">
            <ul  class="cd-dropdown-trigger2">
               <xsl:attribute name="class"><xsl:choose>
                     <!-- Second Level -->
                     <xsl:when test="parent_id = 0">cd-secondary-dropdown is-hidden</xsl:when>
                     <!-- Another Levels -->
                     <xsl:otherwise>is-hidden</xsl:otherwise>
               </xsl:choose></xsl:attribute>
               
               <xsl:apply-templates select="shop_group" />
            </ul>
         </xsl:if>
      </li>
   </xsl:template>
</xsl:stylesheet>

.cd-dropdown {
    position: fixed;
    z-index: 3; /* Поменять */