Hello HTML
A simple React application renders a classic smiley face as an SVG graphic. The visualization demonstrates how to structure SVG elements within a React component, using a yellow circle for the face, black circles for eyes, and a curved path for the mouth. The code constructs the mouth with the `arc()` function from d3.v6, while React 17 manages the DOM. The drawing is centered on a 960 by 500 viewport using SVG translation and coordinates.