message: minor responsive design fix
diff: @@ -128,7 +128,7 @@ function App() {
  <code className="language-javascript">{demoCode}</code>
  </pre>
  - <div className="row">
  + <div className="row row-cols-1 row-cols-md-3 g-4">
  <div className="col">
  <button type="button" className="btn btn-success w-100 me-3" onClick={(_ev) => runDemo()}>
  Run Demo
  