Hello HTML
This example displays a single large yellow circle with a black outline centered in an SVG canvas using React. The circle is rendered via React’s `ReactDOM.render` method, with static dimensions (960×500) and coordinates computed from the center. The code imports React and ReactDOM from UMD builds, defines an `App` component returning an SVG `<circle>`, and includes an unused `Eye` component. No interactive behavior or data source is present; it serves as a minimal demonstration of SVG rendering within a React application.