{%- if site.data.analytics.google.tag-manager-id -%}

<!-- google tag manager (noscript) -->
<noscript>
    <iframe src="https://www.googletagmanager.com/ns.html?id={{- site.data.analytics.google.tag-manager-id -}}"
            height="0" 
            width="0" 
            style="display:none;visibility:hidden">
    </iframe>
</noscript>
<!-- end google tag manager (noscript) -->

{%- endif -%}