{%- if jekyll.environment == 'production' and site.google_analytics -%} <script
async src="https://www.googletagmanager.com/gtag/js?id={{ site.google_analytics }}"
></script> <script>
window.dataLayer = window.dataLayer || []; function gtag() { dataLayer.push(arguments); } gtag('js', new Date()); gtag('config', '{{ site.google_analytics }}');
</script> {%- endif -%}