Expanding CSS Shadow Effects
March 31, 2025

The Power of Shadows
Shadows in CSS can be multi-directional, layered, and are animate-able. On top of being all that, they don’t affect the layout and computed size of an element even though they can make it appear bigger or smaller, which makes them an efficient tool for making visual changes.
Source: Expanding CSS Shadow Effects – Frontend Masters Blog
Shadows have been a staple of Web (and screen based) design for decades. Even a simple one pixel line can give the impression of depth to the otherwise flat UI of a screen.
But CSS shadows can do much more than add a little depth as Preethi Sam explores here.