Init Customizer

docs/_react/bulma-customizer/src/main.jsx

@@ -0,0 +1,9 @@
+import React from "react";
+import ReactDOM from "react-dom/client";
+import App from "./App.jsx";
+
+ReactDOM.createRoot(document.getElementById("root")).render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+);