_includes/head.html

<head>
  <!-- Google Tag Manager -->
  <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=
  'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
  })(window,document,'script','dataLayer','GTM-52DXT37');</script>
  <!-- End Google Tag Manager -->
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <link rel="shortcut icon" type="image/x-icon" href="{{ site.baseurl }}/favicon.ico?">
  <title>
    {% if page.title %}
      {{ page.title }} | PyTorch
    {% else %}
      PyTorch
    {% endif %}
  </title>
  {% include open_graph_and_meta.html %}
  <link rel="stylesheet" href="{{ site.baseurl }}/assets/main.css">
  <script src="{{ site.baseurl }}/assets/vendor/jquery.min.js"></script>
  <script src="{{ site.baseurl }}/assets/vendor/popper.min.js"></script>
  <script src="{{ site.baseurl }}/assets/vendor/bootstrap.min.js"></script>
  <script src="{{ site.baseurl }}/assets/vendor/anchor.min.js"></script>
  <script type="text/x-mathjax-config">
    MathJax.Hub.Config({
      tex2jax: {
        skipTags: ['script', 'noscript', 'style', 'textarea', 'pre'],
        inlineMath: [['$','$']]
      }
    });
  </script>
  <script src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML" type="text/javascript"></script>
  <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.js"></script>
  {% if jekyll.environment == 'production' %}
    {% include analytics.html %}
    {% include pixel.html %}
    {% include twitter_pixel.html %}
  {% endif %}
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/docsearch.js@2/dist/cdn/docsearch.min.css" />
  <link href="{{ site.baseurl }}/feed.xml" type="application/atom+xml" rel="alternate" title="Pythorch Blog Posts" />
</head>