hugo-theme-hello-friend/layouts/_default/single.html

{{ define "main" }}
  <div class="post">
    <h2 class="post-title"><a href="{{ .Permalink }}">{{ .Title | markdownify }}</a></h2>
    <div class="post-meta">
      <span class="post-date">
        {{ .Date.Year }}-{{ sub .Date.Month 0 }}-{{ .Date.Day }}
      </span>
      <span class="post-author">Written by {{ .Params.Author }}</span>
    </div>

    {{ if .Params.tags }}
      <span class="post-tags">
        {{ range .Params.tags }}
          #<a href="{{ $.Site.BaseURL }}tags/{{ . | urlize }}">{{ . }}</a>&nbsp;
        {{ end }}
      </span>
    {{ end }}

    {{ with .Params.Cover }}
      <img src="/img/{{ . }}" class="post-cover" />
    {{ end }}

    <div class="post-content">
      {{ .Content }}
    </div>
    {{ if or .NextInSection .PrevInSection }}
      <div class="pagination">
        <div class="pagination__title">
          <span class="pagination__title-h">Read other posts</span>
          <hr />
        </div>
        <div class="pagination__buttons">
          {{ if .NextInSection }}
            <a class="btn next" href="{{ .NextInSection.Permalink }}">← {{ .NextInSection.Title }}</a>
          {{ end }}
          {{ if .PrevInSection }}
            <a class="btn previous" href="{{ .PrevInSection.Permalink }}">{{ .PrevInSection.Title }} →</a>
          {{ end }} 
        </div>
      </div>
    {{ end }}
  </div>
{{ end }}