This example displays three Datawrapper choropleth maps in a side-by-side three-column layout, filling the viewport with a responsive design. Each map is embedded via an iframe and occupies exactly one-third of the screen width, with equal column distribution and full-height alignment. The page uses pure HTML, CSS, and JavaScript, with index.js assigning Datawrapper embed URLs to respective iframe elements, while styles.css applies flexbox layout, borders, and shadows for visual separation.