This example displays a classic yellow smiley face that fills the browser window, with two black eyes and a wide, friendly grin. The face is rendered as an SVG using React and ReactDOM, with the component structure defining circles for the head and eyes. The face’s size and position are calculated dynamically from the window’s inner dimensions, centering it precisely on the screen. The code leverages React’s declarative JSX syntax to create the SVG elements, with a `<g>` transform handling the central translation.