SVG fundamentals
This example illustrates the foundational building blocks of SVG-based data visualizations, using a minimal HTML page as a canvas. The code defines a centered message that displays "Hello HTML!" with a large, 13em font size, styled entirely through a CSS class. The rendering approach is pure HTML and CSS, with no JavaScript or external libraries involved, making it a simple yet clear demonstration of how to control text layout and presentation on a web page. Its purpose is to serve as a starting point for more complex interactive graphics.