A single bar from a bar chart is rendered as two adjacent SVG rectangles, one wide and one narrow, demonstrating how SVG primitives build chart elements. The code uses raw SVG `rect` elements within an `svg` viewBox, rather than a JavaScript library like D3. The bar is drawn with a solid blue fill and a thinner light-blue stripe, suggesting a highlighted segment or axis marker. This example shows the simplest possible SVG path-based construction for a bar, with no scales, axes, or data binding, serving as a minimal starting point for chart creation.