Expanded Use of `box-shadow` and `border-radius` | Modern CSS Solutions
css - CSS3 box shadow only on top left and right corners - Stack Overflow
CSS box shadow is not to create a shadow but to place a duplicate copy beneath | by MasaKudamatsu | Web Dev Survey from Kyoto | Medium
FeE 2: CSS 8a Round Corners
css - Box-shadow only on div corners - Stack Overflow
Corner shadow box | Shadow box, Military shadow box, Shadow
Josh W. Comeau on Twitter: "🔥 `filter: drop-shadow` is the gift that keeps on giving. With `box-shadow`, one sibling's shadow can cast over another, breaking the 3D illusion. By putting `drop-shadow` on
Box shadow , rounded corner shadow , circle shadow