Tailwind CSS ease-in Class

The Tailwind CSS ease-in utility applies transition-timing-function: cubic-bezier(0.4, 0, 1, 1); to an element when added to its class attribute. It starts the animation slowly and accelerates toward the end. Best for elements leaving the screen or transitioning out of view.

This utility is part of Tailwind's Transitions module, designed for adding smooth CSS transitions with configurable duration, timing, and property targeting. In Tailwind's utility-first workflow, you add ease-in 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:ease-in, md:ease-in, lg:ease-in, and xl:ease-in, allowing different behavior at each breakpoint. State variants like hover:ease-in and focus:ease-in 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 `ease-out`, `ease-in-out`, `ease-linear`, `duration-300` 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.