{{- with .Title | default .Site.Title }}
  <meta name="twitter:title" content="{{ . | truncate 70 }}" />
{{- end }}
{{- with .Description | default .Params.subtitle | default .Summary }}
  <meta name="twitter:description" content="{{ . | truncate 200 }}">
{{- end }}
{{- with .Params.share_img | default .Params.image | default .Site.Params.logo }}
  <meta name="twitter:image" content="{{ . | absURL }}" />
{{- end }}
  <meta name="twitter:card" content="summary" />
{{- with .Site.Author.twitter }}
  <meta name="twitter:site" content="@{{ . }}" />
  <meta name="twitter:creator" content="@{{ . }}" />
{{- end }}