_includes/head.html

<head>
  <meta charset="utf-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge" />
  <meta name="viewport" content="width=device-width, initial-scale=1" />

  <title>
    {% if page.title %}{{ page.title | escape }}{% else %}{{ site.title | escape
    }}{% endif %}
  </title>
  <meta
    name="description"
    content="{{ page.excerpt | default: site.description | strip_html | normalize_whitespace | truncate: 160 | escape }}"
  />
  <link
    rel="icon"
    type="image/png"
    sizes="96x96"
    href="/assets/favicon-96x96.png"
  />
  <link rel="stylesheet" href="{{ "/assets/main.css" | relative_url }}">
  <link
    rel="canonical"
    href="{{ page.url | replace:'index.html','' | absolute_url }}"
  />
  <link rel="alternate" type="application/rss+xml" title="{{ site.title | escape
  }}" href="{{ "/feed.xml" | relative_url }}">
  <link
    href="https://fonts.googleapis.com/css?family=Source+Code+Pro|Roboto"
    rel="stylesheet"
  />
  {% if jekyll.environment == 'production' and site.google_analytics %} {%
  include google-analytics.html %} {% endif %}
</head>