This example shows a bar chart intended to display the percentage of cases by Spanish province for June 2021, though the rendering logic in `index.js` is incomplete and only logs the loaded data to the console. The code loads data from `data.csv` using `d3.csv` and selects an SVG element via `d3.select`. It defines placeholder accessor functions and a `render` function that is never called, leaving the visualization blank. The page includes a D3 v5 script and a stylesheet that styles any `rect` elements in steelblue.