diff --git a/app/templates/views/platform-admin/_base_template.html b/app/templates/views/platform-admin/_base_template.html
index c1f5b0f7f..941e8ce1a 100644
--- a/app/templates/views/platform-admin/_base_template.html
+++ b/app/templates/views/platform-admin/_base_template.html
@@ -1,48 +1,50 @@
 {% extends "withoutnav_template.html" %}
 {% from "components/page-footer.html" import page_footer %}
 
-
-{% block beforeContent %}
-  <div class="navigation-service">
-    <div class="navigation-service-name govuk-!-font-weight-bold">
-      Platform admin
+{% block main %}
+<div class="govuk-width-container {{ mainClasses }}">
+    <div class="navigation-service">
+      <div class="navigation-service-name govuk-!-font-weight-bold">
+        Platform admin
+      </div>
+      <a href="{{ url_for('main.choose_account') }}" class="govuk-link govuk-link--no-visited-state navigation-service-switch">Switch service</a>
     </div>
-    <a href="{{ url_for('main.choose_account') }}" class="govuk-link govuk-link--no-visited-state navigation-service-switch">Switch service</a>
-  </div>
-  {% block backLink %}{% endblock %}
-{% endblock %}
-
-{% block content %}
-  <div class="govuk-grid-row">
-    <div class="govuk-grid-column-one-quarter">
-      <nav class="navigation">
-          {% for link_text, url in [
-          ('Summary', url_for('main.platform_admin')),
-          ('Live services', url_for('main.live_services')),
-          ('Trial mode services', url_for('main.trial_services')),
-          ('Organisations', url_for('main.organisations')),
-          ('Providers', url_for('main.view_providers')),
-          ('Reports', url_for('main.platform_admin_reports')),
-          ('Email branding', url_for('main.email_branding')),
-          ('Letter branding', url_for('main.letter_branding')),
-          ('Inbound SMS numbers', url_for('main.inbound_sms_admin')),
-          ('Find services by name', url_for('main.find_services_by_name')),
-          ('Find users by email', url_for('main.find_users_by_email')),
-          ('Email complaints', url_for('main.platform_admin_list_complaints')),
-          ('Returned letters', url_for('main.platform_admin_returned_letters')),
-          ('Clear cache', url_for('main.clear_cache')),
-        ] %}
-          <li>
-            <a class="govuk-link govuk-link--no-visited-state" href="{{ url }}">
-              {{ link_text }}
-            </a>
-          </li>
-        {% endfor %}
-      </nav>
-    </div>
-    <div class="govuk-grid-column-three-quarters column-main">
-      {% include 'flash_messages.html' %}
-      {% block platform_admin_content %}{% endblock %}
+    <div class="govuk-grid-row">
+      <div class="govuk-grid-column-one-quarter">
+        <nav class="navigation">
+            {% for link_text, url in [
+            ('Summary', url_for('main.platform_admin')),
+            ('Live services', url_for('main.live_services')),
+            ('Trial mode services', url_for('main.trial_services')),
+            ('Organisations', url_for('main.organisations')),
+            ('Providers', url_for('main.view_providers')),
+            ('Reports', url_for('main.platform_admin_reports')),
+            ('Email branding', url_for('main.email_branding')),
+            ('Letter branding', url_for('main.letter_branding')),
+            ('Inbound SMS numbers', url_for('main.inbound_sms_admin')),
+            ('Find services by name', url_for('main.find_services_by_name')),
+            ('Find users by email', url_for('main.find_users_by_email')),
+            ('Email complaints', url_for('main.platform_admin_list_complaints')),
+            ('Returned letters', url_for('main.platform_admin_returned_letters')),
+            ('Clear cache', url_for('main.clear_cache')),
+          ] %}
+            <li>
+              <a class="govuk-link govuk-link--no-visited-state" href="{{ url }}">
+                {{ link_text }}
+              </a>
+            </li>
+          {% endfor %}
+        </nav>
+      </div>
+      <div class="govuk-grid-column-three-quarters">
+      {% block backLink %}{% endblock %}
+        <main class="govuk-main-wrapper column-main govuk-!-padding-top-0 govuk-!-padding-bottom-0" id="main-content" role="main">
+          {% block content %}
+            {% include 'flash_messages.html' %}
+            {% block platform_admin_content %}{% endblock %}
+          {% endblock %}
+        </main>
+      </div>
     </div>
   </div>