Add src/App.tsx

src/App.tsx

@@ -0,0 +1,13 @@
+import React from 'react'
+
+function App() {
+  return (
+    <div className="min-h-screen bg-gray-100">
+      <h1 className="text-3xl font-bold text-center pt-10">
+        Hello Vite + React + Tailwind!
+      </h1>
+    </div>
+  )
+}
+
+export default App