Casual_blog/layouts/shortcodes/source.html

<hr>
<details>
    <summary style="cursor: pointer;">Sources</summary>
	 <ul>
		{{ range split (strings.TrimLeft "\n" (strings.TrimRight "\n" .Inner)) "\n" }}
		    {{ if hasPrefix . "http" }}
		        <li><a href="{{ . }}">{{ . }}</a></li>
		    {{ else }}
		        <li>{{ . }}</li>
		    {{ end }}
		{{ end }}
	</ul> 

</details>