This example displays a minimal webpage with a centered, oversized "Hello HTML" message in 13em text. It demonstrates the foundational structure of an HTML document, including a `<style>` block for basic CSS styling and a `<script>` tag that logs "Hello JavaScript!" to the browser’s developer console. The code uses standard HTML elements and the browser’s built-in `console.log` API. It serves as a bare-bones starting point for web development, with no external libraries or data sources.