:description" content="{% if page.excerpt %}{{ page.excerpt | strip_html | strip_newlines | truncate: 160 }}{% else %}{{ site.description }}{% endif %}" />
  <meta property="og:url" content="{{ site.url }}" />
  <meta property="og:site_name" content="{{ site.title }}" />
  <meta property="og:title" content="{% if page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}" />
  <meta property="og:type" content="website" />
  <meta property="og:image" content="{% if page.cover %}{{ page.cover | prepen