Need to hide large featured images in custom posts in University Theme with Learndash

wordpress

#1

I am using the university theme on wordpress with learndash. The theme puts this large featured image at the top of all the post type pages like categories, classes, etc. I want the thumbnail to still appear in grids, but I do not want this huge featured image at the top of each course and category post. Any help with the css to remove them would be greatly appreciated.