An interactive stacked horizontal bar chart displays customer satisfaction ratings across five smartphone brands, segmented into Satisfied, Neutral, and Dissatisfied percentages that sum to 100%. Built with D3 v7, the visualization uses `d3.stack()` for data transformation, `d3.scaleBand` for brand categories, `d3.scaleLinear` for percentages, and SVG rectangles with click handlers that alert the rating type and exact percentage. The chart includes axes, a title, and a legend, derived from a CSV file containing three numeric columns per brand.