Tailwind CSS scale-90 Class

The Tailwind CSS scale-90 utility applies transform: scale(.9); to an element when added to its class attribute. It scales the element to 90% of its original size. A subtle reduction often used for active/pressed button states to create a tactile feel.

This utility is part of Tailwind's Transforms module, designed for applying geometric transformations like scale, rotate, translate, and skew to elements. In Tailwind's utility-first workflow, you add scale-90 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:scale-90, md:scale-90, lg:scale-90, and xl:scale-90, allowing different behavior at each breakpoint. State variants like hover:scale-90 and focus:scale-90 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 `scale-75`, `scale-95`, `scale-100`, `transition-transform` 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.