Design modern UI elevation and soft card shadows visually, then copy clean CSS properties.
The CSS box-shadow property attaches one or more drop-shadows to an element's frame. It accepts up to six parameters:
box-shadow: [inset] <offset-x> <offset-y> <blur-radius> <spread-radius> <color>;
Design Tip for Modern UI: To achieve natural, elegant shadows like those seen in Apple or Stripe interfaces, keep the blur radius large, the spread radius slightly negative (e.g. -5px), and the opacity low (between 5% and 15%).