This example presents a minimal web page that displays the text “Hello HTML!” centered on a white background. It demonstrates the fundamental building blocks of a web-based visualization or webpage using standard HTML elements, CSS for styling, and JavaScript. The page structure is defined in an `index.html` file, with visual styling applied through a CSS class rule. While the code does not fetch or process any data, it serves as a bare-bones template for adding interactive elements or graphics using technologies like the canvas API or D3.js.