This stacked bar chart displays the distribution of product categories—Formal, Casual, and Shoes—across four clothing brands. Each brand’s total value is segmented into three colored bars, with a legend identifying each category. The chart uses D3 v7’s `scaleBand` for the x-axis, `scaleLinear` for the y-axis, and `selectAll` to render the grouped rectangles as SVG. The dataset is hardcoded, and colors are assigned via an array of hex codes.