{% if gtm_code is defined %}
    <!-- Google Tag Manager -->
    <noscript>
        <iframe src="//www.googletagmanager.com/ns.html?id={{ gtm_code }}" height="0" width="0" style="display:none;visibility:hidden"></iframe>
    </noscript>
    <script>
    (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='//www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','{{ gtm_code }}');
    </script>
    <!-- End Google Tag Manager -->
{% endif %}