With spacing

wagtail/admin/templates/wagtailadmin/shared/headers/slim_header.html

@@ -28,7 +28,11 @@
                 {% endblock %}
             </div>
         </div>
-        {% block search_form %}{% endblock %}
+        <div class="w-pl-5 w-pb-7.5">
+            <div class="w-pl-0 sm:w-pl-slim-header w-ml-2.5">
+                {% block search_form %}{% endblock %}
+            </div>
+        </div>
     </header>
 
     {% block side_panels %}