{%- if site.enable_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 -%}