Hello HTML
This example displays a simple smiley face drawn with SVG shapes on a 960 by 500 canvas. It renders a yellow circle with a black outline as the head, plus two smaller unfilled circles for eyes, all defined directly in the markup. The page loads React from a CDN and logs the React object to the console, though no React components or state drive the visualization. The HTML and CSS set the page margin to zero and hide overflow, while the SVG elements handle the entire graphic.