Add CSS class to the iframe for Course Presentation
I would like to know if there is a way to add a CSS class to the iframe for Course Presentation. This is so that I can have a different colour scheme based off a course. Ideally, I would like to insert a CSS class (e.g. "module-01") into the tag as per the image attached.
I am using the Drupal distribution Opigno.
I also have gone through the Visual Change and have created a custom module successfully and a custom H5P CSS stylesheet.
I also have seen the H5P API hooks for Drupal too, however I can't seem to find the right place to do what I would like.
Thank you for your help!