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Swap the Bootstrap CDN for a self-hosted Tailwind CSS build, mirroring the myice setup: standalone Tailwind CLI v3.4.17, a one-off build-css.sh script, and a gitignored generated style.css. - Add tailwind.config.js, style-input.css, build-css.sh at repo root - Rewrite templates/index.html: drop Bootstrap link/script, link /style.css, convert all classes to Tailwind utilities; showAlert now uses a class lookup so the JIT scanner detects dynamic classes - Add /style.css FileResponse route in main.py; drop cdn.jsdelivr.net from script-src/style-src in the CSP - Flip test assertion to assert cdn.jsdelivr.net is absent from CSP The generated style.css and tailwindcss binary are gitignored; run ./build-css.sh to regenerate (or --watch for dev).