art page structure

_includes/series.njk

@@ -0,0 +1,9 @@
+<h2>{{ series.data.title }}</h2>
+
+<div class="imgset">
+  {% for img in series.data.imgs %}
+    <img src="/img/{{ img.src }}" alt="{{ img.alt }}">
+  {% endfor %}
+</div>
+
+{{ series.content | safe }}