Drop Shadow to Gallery Images (Icons?)

Site URL: https://denim-perch-4c8s.squarespace.com/graphicdesignportfolio/project-one-ephnc-x752x

Looking for a way to add a drop shadow to my images in galleries, masonry style. 

Thanks for any help!

You can try this, but it will affect the image container, it will not conform to the shape (circular or more complicated) of the image within the image container, so I don't think this is what you want.

figure.gallery-masonry-item {
  box-shadow: 5px 5px 5px rgb(0 0 0 / 20%);
}

Your best bet may be to use photoshop to add a shadow to each image.