Fork of Hello HTML
This example displays a simple yellow smiley face rendered as an SVG inside a React application. It uses D3’s `arc` generator to create the mouth path, while the face’s eyes and outer circle are drawn with basic SVG `<circle>` elements. The code imports React and ReactDOM for component rendering, and D3 v7 for the arc calculation, with all shapes positioned relative to the SVG’s center. The face is static, with no interactivity or animation, and serves as a minimal demonstration of combining React’s declarative JSX with D3’s geometric helpers.