Update index.html

register/index.html

@@ -244,6 +244,9 @@
                                             <button class="webform-button--submit button button--primary js-form-submit form-submit btn-primary btn" style="align:center"
                                                 data-drupal-selector="edit-actions-submit" type="submit" id="edit-actions-submit"
                                                 name="op" value="Submit">Register</button>
+                                                <div class="popup" onclick="myFunction()">Click me!
+                                                <span class="popuptext" id="myPopup">registrations closed</span>
+                                                </div>                                       
                                         </div>
                                 </div>
                             </div>