Tailwind CSS blur Class

The Tailwind CSS blur utility applies filter: blur(8px); to an element when added to its class attribute. It applies an 8px Gaussian blur to the element. Used for background blur effects, de-emphasizing content, and frosted glass aesthetics.

This utility is part of Tailwind's Effects module, designed for applying visual effects including shadows, opacity, rings, and blur filters to elements. In Tailwind's utility-first workflow, you add blur directly to your HTML elements rather than writing custom CSS. This approach accelerates development and keeps styles co-located with your markup, making it easy to see exactly how each element is styled at a glance.

Common responsive variants include sm:blur, md:blur, lg:blur, and xl:blur, allowing different behavior at each breakpoint. State variants like hover:blur and focus:blur enable interactive styling without any JavaScript. You can also combine multiple variants for fine-grained control over when the utility applies.

This class works well alongside `blur-sm`, `blur-md`, `blur-lg`, `opacity-50` to build complete, production-ready interfaces. Tailwind's tree-shaking ensures only utilities you actually use appear in your final CSS bundle, keeping file sizes minimal. Browser support for the underlying CSS is excellent across Chrome, Firefox, Safari, and Edge.