This example demonstrates a minimal HTML page rendering the text "Hello HTML" centered in the browser window with a large 13em font size. It serves as a bare-bones starter template showing how CSS and JavaScript integrate within a single HTML file. The page uses inline `<style>` for styling the body and a `<script>` block that logs "Hello JavaScript!" to the browser’s developer console. No external libraries are loaded; the code relies purely on native HTML, CSS, and JavaScript APIs.