tailwind v4 vite

# tailwind v4 vite

> Imported from [github/awesome-copilot](https://github.com/github/awesome-copilot/blob/613efc8c21d9b3ce642dff361d17006cd9967e28/instructions/tailwind-v4-vite.instructions.md) (MIT, commit `613efc8`). This instruction was written by its upstream contributors and has **not been reviewed** by AI Development Hub. See the bundled `LICENSE`.

Tailwind CSS v4+ installation and configuration for Vite projects using the official @tailwindcss/vite plugin

Scope: `vite.config.ts, vite.config.js, **/*.css, **/*.tsx, **/*.ts, **/*.jsx, **/*.js`