Fix alert styling and ensure consistent formatting in user results table rendering.

inventory/templates/search.html

@@ -11,7 +11,7 @@
         )
     ) }}
     {% if not results['inventory']['rows'] and not results['users']['rows'] and not results['worklog']['rows'] %}
-    <div class="alert alert-danger">There are no results for "{{ query }}".</div>
+    <div class="alert alert-danger rounded-0">There are no results for "{{ query }}".</div>
     {% endif %}
 {% endblock %}