Simple Bar Chart
This example demonstrates a simple bar chart created as a static SVG visualization. The code sets up a responsive SVG container using a viewBox and `preserveAspectRatio`, with margins applied via padding. It uses D3 v5 to select the container and append the SVG element, though the chart itself is not yet drawn—only the SVG preparation and empty data sections are present. The rendering approach is SVG-based, with dimensions fixed at 960 by 500 pixels.