Glassmorphism — a frosted, semi-transparent glass-like surface effect — became a popular UI design trend for cards, modals, and navigation bars, combining a blurred backdrop with a translucent background and a subtle border.
Adjust the backdrop blur amount and background opacity with live controls, and watch the sample card update against a gradient background to preview the frosted-glass effect, then copy the CSS to apply it in your own project.
This effect relies on the backdrop-filter CSS property, which blurs whatever is behind the element — it needs something visually interesting behind it (like an image or gradient) to actually show the glass effect clearly.
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Frequently asked questions
Why doesn't the glass effect show on a plain white background?
Backdrop blur needs visual content behind the element to blur — a plain solid background won't show any noticeable frosted effect since there's no detail to blur.
Is backdrop-filter supported in all browsers?
It's supported in all current major browsers, though older browser versions may need a vendor-prefixed fallback or won't render the blur effect at all.