Add Bootstrap modal in template

app/templates/auth/SignUp.html

@@ -110,6 +110,19 @@
 </div>
 
         <div id ="testo"></div>
+    <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" data-backdrop="static" data-keyboard="false">
+        <div class="modal-dialog modal-sm" role="document">
+            <div class="modal-content">
+                <div class="modal-header">
+                    <h4 class="modal-title" id="myModalLabel">Thank you for requesting</h4>
+                </div>
+                <div class="modal-body">
+                    <span>We are creating your account. It may take 5-10 minutes.</span>
+                    <img src="{{ url_for('static', filename='img/loading.gif') }}" width="40px">
+                </div>
+            </div>
+        </div>
+    </div>
 <footer>
   <div class="container-fluid">
     <div class="row">