Initial working draft.

layouts/_shortcodes/card.html

@@ -0,0 +1,15 @@
+<div class="col">
+  <div class="card h-100">
+    <h5 class="card-header">{{ .Get "title" }}</h5>
+    <div class="card-body">
+      <p class="card-text">{{ .Inner }}</p>
+    </div>
+    {{- $link_href := .Get "link-href" -}}
+    {{- if $link_href }}
+      <div class="card-footer text-body-secondary">
+        <a href="{{ $link_href }}">{{ .Get "link-text" }}</a>
+      </div>
+    {{- end -}}
+  </div>
+</div>
+