blog/hugo/layouts/_default/single.html

{{ define "title" }}
    {{ .Title }} – {{ .Site.Title }}
{{ end }}
{{ define "main" }}
    <article>
        <h1 class="display-3 text-center">{{ .Title }}</h1>
        <p class="text-center"><time datetime="{{ .Date }}">{{ .Date.Format "2006-01-02" }}</time></p>
        {{ .Content }}
    </article>
{{ end }}