implementing nested blueprint for api calls

app/campaigns/campaign_api/templates/testing.html

@@ -0,0 +1,22 @@
+{% extends 'base.html' %}
+{% block title %}testing{% endblock title %}
+
+{% block stylesheet %}
+<style>
+    .custom-table {
+        border-radius: 15px;
+        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+        overflow: hidden; /* Ensures rounded corners apply to the entire table */
+    }
+</style>
+{% endblock stylesheet %}
+{% block content %}
+<main>
+    <div class="container my-4 px-5">
+        <h2 class="text-center">Testing Page</h2>
+        
+        
+    </div>
+    
+</main>
+{% endblock content %}