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Modern Glass UI Design Tool

Free Glassmorphism CSS Generator

Create stunning frosted glass UI elements with interactive backdrop-filter blur, background opacity, border highlights, and instant cross-browser CSS code generation.

Glass Card

Frosted Glass UI Effect

Backdrop Blur 16px
Glass Transparency / Opacity 25%
Border Edge Highlight 30%
Corner Rounding (Radius) 24px
Workflow

How To Create Glassmorphism in CSS

1

Backdrop-Filter Blur

The heart of glassmorphism is `backdrop-filter: blur()`, which frost-blurs whatever HTML elements sit beneath the card.

2

Translucent RGBA Layer

A semi-transparent background fill (`rgba(255, 255, 255, 0.25)`) creates the physical glass pane surface.

3

Subtle Border Highlight

A delicate 1px semi-transparent white border simulates light bouncing off the chamfered glass edge.

FAQ

Frequently Asked Questions

Apple Safari (both macOS and iOS Safari on iPhone/iPad) requires the `-webkit-backdrop-filter` vendor prefix to render background blur effects smoothly. This tool automatically includes both properties so your design looks identical on Apple and Windows/Android devices.

Glassmorphism requires vibrant, high-contrast visual elements underneath (such as colorful gradients, high-resolution photography, or floating geometric shapes) for the frosted blur effect to be visibly striking. On plain flat white backgrounds, the blur has nothing to diffuse.

A subtle semi-transparent white border (e.g. 1px solid rgba(255,255,255,0.2)) mimics the refractive bevel of real physical glass, giving the element a crisp edge that separates it from busy background content.

Yes. backdrop-filter is fully supported by all modern evergreen browsers (Chrome, Edge, Safari, Firefox, Opera) across desktop and mobile operating systems since 2020.
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