This stacked bar chart visualizes the impact of movie genres on IMDb ratings, showing the proportional distribution of five rating levels within each genre. The horizontal bars, rendered as SVG rectangles, display percentages that sum to 100% per genre. Hovering over any segment reveals a tooltip with the exact percentage for that rating level. The visualization uses D3 v7’s `d3.stack()` for data stacking, `d3.scaleBand()` for genre positioning, and `d3.scaleOrdinal()` with a custom color palette. Mouse events (`mouseover`, `mousemove`, `mouseout`) trigger the interactive tooltip, while axes are generated with `d3.axisLeft()` and `d3.axisBottom()`.