installed unocss and it works

src/main.tsx

@@ -3,6 +3,7 @@ import { createRoot } from "react-dom/client";
 import { RouterProvider, createRouter } from "@tanstack/react-router";
 // Import the generated route tree
 import { routeTree } from "./routeTree.gen";
+import "virtual:uno.css";
 
 // import App from "./App.tsx";