This area chart visualizes COVID-19 confirmed cases by country, with a steel-blue filled area representing case counts. The SVG chart uses D3.js v7 to load a CSV dataset, map it to a band scale for countries and a linear scale for confirmed cases, and generate the area path via `d3.area()`. Axis labels and rotated tick text are added with `d3.axisBottom` and `d3.axisLeft`, while the chart is rendered on a yellow background with fixed dimensions.