Environment: https://experiencedynamicscom.kinsta.cloud/
Browser: Firefox, Chrome 

Steps:
"1. Go to https://experiencedynamicscom.kinsta.cloud/courses/insight-sprints-workshop/
2. On Course Description section, click on any collapsible
3. Observe the collapsible's header"

Actual: Collapsible header change upon collapsing
Expected: Collapsible header should not change upon collapsing

Evidence:
https://drive.google.com/open?id=1UlYtVb76ZC4zeQL6icsyJdp8lO1T-CL2&usp=drive_copy