Smiley Face part-1
This example shows the first stage of building a simple smiley face: a large yellow circle with two smaller black circles for eyes, rendered in a fixed 960×500 SVG viewport. The markup is written directly in the HTML file, while the accompanying React code, using `ReactDOM.render`, is currently inert and logs the React objects to the console. The SVG uses basic shape elements like `circle` with explicit `cx`, `cy`, and `r` attributes, along with a yellow fill and black stroke for the face outline. No interactive behavior or animation is present.