This area chart displays the cumulative number of COVID-19 deaths over time from January to December 2020, using a steelblue filled path to show the upward trend. The visualization loads CSV data via `d3.csv`, parses dates with `d3.timeParse`, and scales the axes with `d3.scaleTime` and `d3.scaleLinear`. The area shape is generated using `d3.area`, with axes rendered by `d3.axisBottom` and `d3.axisLeft`, all within an SVG created by D3 v6.