_layouts/default.html

<!DOCTYPE html>

<html lang="{{ site.lang | default: "en-US" }}">

  <head>
    <meta charset='utf-8'>
    <meta http-equiv="X-UA-Compatible" content="chrome=1">
    <meta name="viewport" content="width=device-width,maximum-scale=2">
    <meta name="description" content="{{ site.title | default: site.github.repository_name }} : {{ site.description | default: site.github.project_tagline }}">

    <link rel="icon" href="favicon.ico" type="image/x-icon">
    <link rel="stylesheet" type="text/css" media="screen" href="{{ '/assets/css/style.css?v=' | append: site.github.build_revision | relative_url }}">

    {% comment %}
    TODO: Consider installing and using jekyll-seo-tag plugin
    https://github.com/jekyll/jekyll-seo-tag
    {% seo %}
    {% endcomment %}
  </head>

  <body>
    <!-- HEADER -->
    <div id="header_wrap" class="outer">
      <header class="inner">
      <a href="/">
        <h1 id="project_title">
          <img src="{{site.logo_url}}"/>
          <!--<span>{{site.title}}</span>-->
        </h1>
        <h2 id="project_tagline">
          {{site.description}}
        </h2>
      </a>
      </header>
    </div>

    {% if site.data.navbar %}
    <div id="navbar_wrap" class="outer">
      <nav class="inner">
        {% include navbar.html %}
      </nav>
    </div>
    {% endif %}

    <!-- MAIN CONTENT -->
    <div id="main_content_wrap" class="outer">
      <section id="{{page.css_id}}" class="content inner">
        {{ content }}
      </section>
    </div>

    <!-- FOOTER  -->
    <div id="footer_wrap" class="outer">
      <footer class="inner">
        {% include footer.html %}
      </footer>
    </div>

    {% if site.google_analytics %}
      <script type="text/javascript">
        (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
        (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
        m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
        })(window,document,'script','//www.google-analytics.com/analytics.js','ga');
        ga('create', '{{ site.google_analytics }}', 'auto');
        ga('send', 'pageview');
      </script>
    {% endif %}
  </body>
</html>