Jekyll posts by category with HTML description list (dl)

gistfile1.liquid

<section class="posts">
	{% for category in site.categories %}
		<dl>
			<dt>
				{{ category | first | capitalize }}
			</dt>

			{% for posts in category %}
				{% for post in posts %}
					{% if post.url %}
						<dd>
							<a class="post-link" href="{{ post.url }}">
								{{ post.title }}
							</a>
						</dd>
					{% endif %}
				{% endfor %}
			{% endfor %}
		</dl>
	{% endfor %}
</section>