{% if jekyll.environment == "production" %}
    <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 %}
