It’s very easy to add Common Ninja’s HTML code to Drupal.
1. First, copy the app’s HTML code. To do so, in the app’s dashboard, go to “Add to Website”. Here, click on the green button (it will automatically copy the code).
2. Next, go to your Drupal site and select the page you want to edit. In the dashboard, select the “Content” tab, and in the text (body). Switch the text format to “Full HTML”. Click on the “Source” icon and paste the code you’ve copied before to the editor. Click save and that’s it. You should see Common Ninja’s app on your page.