contrast-hugo/layouts/_default/single.html

{{ define "main" }}

<article>
  <header>
    {{ range $index, $tag := .Params.categories }}
      {{- if gt $index 0 }}, {{ end -}}
      <a href="{{ ($.Site.GetPage (printf "/%s/%s" "categories" $tag)).Permalink }}">{{ $tag | upper }}</a>
    {{- end -}}
    <h1>{{ .Title }}</h1>
    {{ if .Date }}<time datetime="{{ .Date.Format "2006-01-02T15:04:05Z07:00" }}">{{ .Date.Format "January 02, 2006" }}</time>{{ end }}
  </header>
  {{ .Content }}
</article>

{{ end }}