To embed your DemoBox on your Facebook as an iFrame tab, follow these steps.
1. Go to: Facebook Static HTML iFrame
2. Click 'Add Static HTML to a page'
3. Select the page you want to add the tab to, and click 'Add Page Tab'.
4. Click 'Edit Tab'
5. Enter in the following embed code, but enter your label name as per your URL.
6. Click 'Preview' to check everything is correct.
7. Click on 'Tab name & image' and login with Facebook. You will then be able to add a title for your tab. Example: Demo Submissions