https://www.elegantthemes.com/preview/Divi/box-shadows/
Box Shadows - Divi, The Ultimate WordPress Theme
box shadowswordpress themediviultimate
https://tobiasahlin.com/blog/layered-smooth-box-shadows/
Smoother & sharper shadows with layered box-shadows | Tobias Ahlin
With a simple CSS trick, we can get fine-tuned control over how shadows are rendered, and create richer and more realistic 3D effects
sharpershadowslayeredboxtobias