Glassmorphism & Frosted Glass CSS Studio

Design modern UI glass cards with live backdrop blur, border refraction, specular glow, and cross-browser fallbacks.

Backdrop Blur:16px
Surface Opacity:15%
Border Refraction Opacity:25%
Border Radius:16px
Shadow Diffusion:32px
Live Interactive Preview

Glass Card

Dynamic Refraction

Frosted glass creates visual hierarchy by allowing background colors to softly blur and shine through.

Active Blur: 16px
Generated CSS Code

What is Glassmorphism in Modern UI Design?

Glassmorphism is a modern design aesthetic popularized by macOS Big Sur and iOS. It creates a multi-layered, three-dimensional depth effect using translucent surfaces, multi-directional background blur (frosted glass), subtle border specular highlights, and soft ambient drop shadows.

Key CSS Properties for Perfect Glass Cards

  • backdrop-filter: blur(px): Blurs all DOM elements behind the element without blurring the element's own text or icon contents. Always pair with -webkit-backdrop-filter for Safari compatibility.
  • Semi-Transparent RGBA Background: Use low alpha values (e.g. rgba(255, 255, 255, 0.15)) to allow vibrant underlying mesh gradients and floating shapes to shine through.
  • Light 1px Specular Border: A 1px semi-transparent white border simulates light hitting the physical edge of a glass pane, preventing the card from blending indistinctly into the background.

Performance & Accessibility Guidelines

While backdrop-filter is hardware accelerated in modern Chromium, WebKit, and Gecko browsers, stacking dozens of blurred layers simultaneously can strain mobile GPUs. Limit blur effects to key modals, navigation bars, and top-level cards for optimal 60 FPS scrolling.