Streaming live at 10am (PST)

How to add shadow effect in a grid's image while watching result

I’m doing the “Full site build” couse. Chapter " Team page: team member detail page" time: 17:40.

Impossible to add the shadow effect on the image while watching the result. I have to click in any other grid cell to see the result.

My read only link:

Here is my site Read-Only:
(how to share your site Read-Only link)