Start with D3.js
This example demonstrates the simplest possible D3.js setup, rendering an SVG element with an orange background. The visualization shows how D3 can select and manipulate existing DOM nodes, using `d3.select('svg')` and `.style()` to apply styling. The code loads D3 v6 from a CDN and includes a basic HTML page with linked CSS. It serves as a starting point for beginners, illustrating the minimal structure needed to begin working with D3’s selection and styling APIs before adding data or complex visualizations.