tailwind v4 upgrade command

package.json

@@ -9,7 +9,6 @@
     "lint": "next lint && npx tsc --noEmit"
   },
   "dependencies": {
-    "autoprefixer": "^10.4.19",
     "class-variance-authority": "^0.7.0",
     "clsx": "^2.1.1",
     "cssnano": "^7.0.1",
@@ -25,13 +24,14 @@
     "tailwindcss-animate": "^1.0.7"
   },
   "devDependencies": {
+    "@tailwindcss/postcss": "^4.1.6",
     "@types/node": "22.15.17",
     "@types/react": "19.1.3",
     "@types/react-dom": "19.1.3",
     "eslint": "8.57.1",
     "eslint-config-next": "15.3.2",
     "postcss": "8.5.3",
-    "tailwindcss": "3.4.17",
+    "tailwindcss": "^4.1.6",
     "turbo": "2.5.3",
     "typescript": "5.8.3"
   },