This example visualizes the percentage of movie ratings by genre using a stacked horizontal bar chart. Each bar segment represents a genre, with colors mapping to categories like Comedy or Drama, and hover interactions reveal precise percentages. Built with D3 v7, the chart utilizes `d3.stack` to compose the data, `d3.scaleBand` and `d3.scaleLinear` for axes, and SVG rendering. The tooltip is implemented with a custom HTML div, while styling comes from a Google Fonts import.