This example demonstrates a simple interactive menu built with React, showing how a dropdown selection updates a displayed value. It uses the `Dropdown` component, which renders a `<select>` element and calls `onSelectedValueChange` on user input. The page includes a static label and an initial dropdown with options for Dog, Cat, and Rat, styled with large fonts. The code relies on React 16.9 and ReactDOM, with the HTML structure defined in `index.html` and logic in `index.js`, though the visible behavior is limited to the static markup and component definition.