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Next.js Installing Tailwind CSS v3

This project runs Tailwind CSS 4, which is the version the official Next.js "getting started" docs point you toward by default now — so it's worth be

layout.js persists across navigations by design — that's precisely why it's useful for shared UI. But sometimes persistence is exactly what you _do

Of the four testing tools covered in this series, Cypress is the one that does double duty out of the box — genuine End-to-End testing and component-

Jest paired with React Testing Library is the long-established default for unit and snapshot testing in the React ecosystem, and Next.js has carried

The official Next.js docs page for "Testing" is deliberately short — it's an orientation page, pointing to four separate, tool-specific setup guides

Given how often this series has pointed toward "use E2E testing" as the answer for whatever a given unit-testing tool doesn't yet support — async Ser