match the customer details page to the rest of the application

customers/templates/customers/customer_details.html

@@ -1,6 +1,17 @@
 {% extends "core/base.html" %}
 {% block section_title %}{{ customer.name }}{% endblock %}
 {% block content %}
-    <h3>Description</h3>
-    <p>{{ customer.description }}</p>
+<div class="row">
+    <div class="col mt-3">
+
+        <div class="card mt-3">
+            <div class="card-body">
+                    <h4>Description</h4>
+                    <div class="card-text"><p>{{ customer.description }}</p></div>
+                    <p>{{ customer.description }}</p>
+            </div>
+        </div>
+
+    </div>
+</div>
 {% endblock %}