This example displays a multi-series area chart of genre rating proportions using D3 v6. It loads CSV data from a GitHub gist, parses columns into separate genre series, and renders overlapping filled areas with a categorical color scheme alongside an x-axis for genres and a y-axis for ratings. The code uses `d3.csv`, `d3.scaleBand`, `d3.scaleLinear`, `d3.area`, `d3.axisBottom`, `d3.axisLeft`, and `d3.schemeCategory10`, outputting to an SVG container. A legend maps each genre to its corresponding color.