{% assign plang = page.lang | default: site.langs[0] | default: "en" %}
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1">

  {% if page.seo.title %}
  <title>{{ page.seo.title }}</title>
  {% else %}
  <title>{{ page.title | append: " | " | default:"" }}{% include _i18n/i18n.html value=site.title %}</title>
  {% endif %}

  {% if page.seo.description %}
  <meta name="description" content="{{ page.seo