app/themes/hugo-theme-stack/layouts/partials/article/article.html

<article class="{{ if .Params.image }}has-image {{ end }}main-article">
    {{ partial "article/components/header" . }}

    {{ partial "article/components/content" . }}

    {{ partial "article/components/footer" . }}

    {{ if or .Params.math .Site.Params.article.math }}
        {{ partialCached "article/components/math.html" . }}
    {{ end }}
</article>