fix: downgrade tailwindcss to v3 (#151)

* fix: downgrade tailwindcss to v3

* chore: auto-fix linting and formatting issues

package.json

@@ -74,9 +74,9 @@
         "eslint-plugin-react-hooks": "^7.0.0",
         "eslint-plugin-react-refresh": "^0.4.23",
         "globals": "^16.4.0",
-        "postcss": "^8.5.6",
+        "postcss": "8.4.24",
         "swagger-typescript-api": "^13.2.15",
-        "tailwindcss": "^4.1.14",
+        "tailwindcss": "3.4.19",
         "typescript": "~5.9.3",
         "typescript-eslint": "^8.46.0",
         "vite": "^7.1.9"