This stacked bar chart visualizes the distribution of IMDb movie ratings across six genres, showing the proportion of films within five rating brackets that sum to 100%. D3.js v7 uses a linear scale for the percentage x-axis and a band scale for genres, with an ordinal color scale mapping each rating category. Hovering over a bar segment triggers a tooltip displaying the exact percentage for that genre-rating combination. The SVG rendering and custom styles are defined in the accompanying CSS and JavaScript files.