perty="og:image" content="{{ page.share-img }}">
  {% elsif site.avatar %}
  <meta property="og:image" content="{{ site.avatar | absolute_url }}">
  {% endif %}


  <!-- Twitter summary cards -->
  <meta name="twitter:card" content="summary">
  <meta name="twitter:site" content="@{{ site.social-network-links.twitter }}">
  <meta name="twitter:creator" content="@{{ site.social-network-links.twitter }}">

  {% if page.meta-title %}
  <meta name="twitter:title" content="{{ page.meta-title }}">
  {% elsif page.