Things are working now.

package-lock.json

@@ -11,11 +11,14 @@
         "@testing-library/jest-dom": "^5.17.0",
         "@testing-library/react": "^13.4.0",
         "@testing-library/user-event": "^13.5.0",
+        "autoprefixer": "^10.4.19",
         "firebase": "^10.12.2",
         "lucide-react": "^0.395.0",
+        "postcss": "^8.4.38",
         "react": "^18.3.1",
         "react-dom": "^18.3.1",
         "react-scripts": "5.0.1",
+        "tailwindcss": "^3.4.3",
         "web-vitals": "^2.1.4"
       }
     },

package.json

@@ -11,7 +11,10 @@
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-scripts": "5.0.1",
-    "web-vitals": "^2.1.4"
+    "web-vitals": "^2.1.4",
+    "autoprefixer": "^10.4.19",
+    "postcss": "^8.4.38",
+    "tailwindcss": "^3.4.3"
   },
   "scripts": {
     "start": "react-scripts start",

postcss.config.js

@@ -0,0 +1,7 @@
+// postcss.config.js
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+}

tailwind.config.js

@@ -0,0 +1,12 @@
+// tailwind.config.js
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: [
+    "./src/**/*.{js,jsx,ts,tsx}", // Standard for CRA
+    "./public/index.html"
+  ],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+}