A simple HTML page displays the text “First Program!” centered at a fixed font size of 22 pixels. The example demonstrates the minimal structure for a visualization gallery entry, using JavaScript’s `container.innerHTML` to inject styled markup directly into the page. The code defines a constant `fontSize` and applies it via an inline CSS style, with text alignment set to center. No external libraries are required, and the rendering relies solely on standard DOM manipulation through the exported `main` function.