This example displays a yellow smiley face centered on a full-screen SVG that adapts to the browser window’s dimensions. The face includes a circular head with a black outline, two eyes offset from the center, and a static, expressionless composition. Built with React and ReactDOM, the visualization uses an SVG `<circle>` elements to draw the head, eyes, and mouth, with a `<g>` transform to position the entire face relative to the viewport’s center. The code relies on React’s JSX syntax to structure the SVG markup dynamically.