This example shows a simple SVG smiley face drawn with React and rendered as a responsive graphic that scales to the full browser window. The face consists of a yellow circle with a black stroke, two black eye circles, and a placeholder mouth, all positioned relative to the window’s center. The code uses React 16.9 and ReactDOM to render the SVG elements directly, with constants like `eyeOffsetX` and `eyeRadius` controlling the layout. The rendering approach relies on JSX components and inline SVG, producing a static visualization without interaction or animation.