tailwind v4 vite

Imported from github/awesome-copilot (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