Layering shadows
Multiple low-opacity layers generally appear softer than one dense shadow. Tune vertical offset and blur together, then verify the effect on both light and dark surfaces.
The Locolory toolkit / Design & Web
CSS Box Shadow & Glassmorphism Generator
Design layered soft shadows and frosted glass backdrop-filter cards with live visual controls.
Box shadows simulate elevation with offset, blur, spread and color. Glassmorphism combines a translucent surface, backdrop blur and a light border.
- Key formula: Layered mode composes one, two or four progressively scaled shadows. Glass mode generates a translucent background, prefixed and standard backdrop filters, and border.
Design values and generated CSS remain entirely in this browser.
• Generated 100% locally in browser
Live surface studio
● Layered shadow + glass CSS
Surface preview
Depth, contrast and atmosphere.
box-shadow: 0.0px 9.0px 20.0px -6.0px rgba(0, 0, 0, 0.35), 0.0px 18.0px 40.0px -12.0px rgba(0, 0, 0, 0.31);
shadow-[0.0px_9.0px_20.0px_-6.0px_rgba(0,_0,_0,_0.35),_0.0px_18.0px_40.0px_-12.0px_rgba(0,_0,_0,_0.31)]
Glass without lost contrast
Backdrop blur depends on content behind the card. Retain a background-color fallback, keep body text contrast high, and avoid excessive blur on large scrolling surfaces.
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Good questions. Clear answers.
Can CSS box-shadow use multiple layers?
Yes. Separate shadow definitions with commas. Layering different offsets and blur radii can create a softer, more natural depth effect.
What makes a glassmorphism surface readable?
A translucent background, backdrop blur, subtle border and sufficient text contrast work together. Always test the surface over the real background.
Does backdrop-filter work everywhere?
Support is broad in current browsers, but fallbacks still matter. Supply a usable semi-opaque background and test performance on lower-powered devices.