This example displays a large, centered HTML message reading “Hello HTML” within an otherwise minimal page. The visualization is rendered using an SVG element with the id `test_svg`, though no graphical data is drawn. The page relies on a separate stylesheet, `style.css`, to set the message’s font size to 16em and center it horizontally via `text-align`. Built with React and rendered as SVG, the code serves as a basic starter template, referencing a bare HTML structure without additional JavaScript or data bindings.