https://www.youtube.com/watch?v=KL0ADfEaCKg
Using CSS box-shadow properties, you can add sleek drop shadows and interesting effects to your images in your Canvas course.
Note: to utilize this feature you will either need access to your institution’s Theme Editor, or you will need to work with an admin who can work with the Theme Editor. This feature is not available for Free-For-Teacher accounts.
Read more about drop shadows in Canvas
