init galery

src/App.css

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+.App {
+  text-align: center;
+}
+

src/App.tsx

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+import React from 'react';
+import './App.css';
+
+function App() {
+  return (
+    <div className="App">
+      <h1>Gallery</h1>
+    </div>
+  );
+}
+
+export default App;

src/index.tsx

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+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+
+const root = ReactDOM.createRoot(
+  document.getElementById('root') as HTMLElement
+);
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+