Initial commit

_layouts/about-narrow.html

@@ -0,0 +1,11 @@
+---
+# narrow text block "About" page layout
+# text block is centered
+layout: default
+---
+<div class="container my-4 about-narrow-contents">
+    {% include feature/jumbotron.html %}
+    {{ content }}
+</div>
+
+{% if page.credits == true %}{% include cb/credits.html %}{% endif %}