This example visualizes the nutritional breakdown of 80 cereal products as a stacked bar chart. It uses a D3.js v7 SVG rendering with a horizontal layout, showing the contribution of three nutrient categories (calories, protein, fat) per cereal brand, as specified in the data.csv file. The chart employs `d3.stack()` for data stacking, `d3.scaleBand()` for the categorical y-axis, and `d3.scaleLinear()` for the quantitative x-axis. Interactive tooltips display exact values per category and cereal when hovering over each bar segment, using D3’s event handlers (`mouseover`, `mousemove`, `mouseout`).