How to delete a master background image in a slideshow
1. After entering the “Slide Master” editing interface, we can see the picture with the background image, and then “check the background image to be deleted”, as shown below
2. Click on the “Delete” button on the laptop to delete the background with the master.
3. Click “Close Master View Off” in the upper right corner to return to the slideshow start screen, and the background image of the master will be deleted.