This example shows a responsive smiley face rendered as an SVG graphic, with a yellow circular head, black outline, and two black eyes positioned symmetrically around the center. The face fills the entire browser window, adapting its size to the viewport dimensions. The visualization is built using React and ReactDOM, generating SVG elements through JSX. Key geometric parameters—such as eye offset, eye radius, and stroke width—are defined as constants, and the face is centered using an SVG group with a transform translation.