This example displays a static HTML page with the message "Hello HTML!" centered in large type. The visualization consists solely of this text element, styled with a font size of 12 em units via the `styles.css` file. No interactive behavior or data rendering occurs; the page loads `index.js`, which simply logs "hello world" to the console. The structure relies on plain HTML, standard CSS, and JavaScript, with no third-party libraries or data visualization APIs implemented.