This example presents a blank, rounded rectangle drawn as an SVG element, filling the entire viewport. The visualization uses d3.v5’s `select` and `append` methods to create a `<rect>` with a fixed corner radius, while the page’s dimensions are pulled from `document.body.clientWidth` and `clientHeight`. The included data.csv, referencing the biblical family tree from Eve and Cain, is not loaded or processed in the displayed code, leaving the canvas intentionally empty. The stylesheet fixes the body to prevent scrolling, ensuring the graphic occupies the full screen.