How to use :"Custom CSS class" in Guru?

How to use :"Custom CSS class" in Guru?. You have an example?
What are the settings so that in the List of Courses the courses are ordered most recently first

Thank you

1/ Guru doesn't offer special custom css class, you can define your own custom css code for it in template you're using.

2/ Unfortunately, there is no settings for ordering courses in the list, it will inherit the order of courses in backend now.

Regards