In this tutorial we use Divi to create some accordion style content sections that organize content into open/close sections. The main benefit of this feature is to reduce the length of long scrolling pages and make it easier for the user to get to the content they want.
The two examples to reference are:
http://greenwichmoms.com/resources/childrens-parties/
http://westuniversitymoms.com/resources/doctors-and-dentists/