This area chart displays laptop sales across different months of the year. The visualization loads data from an external CSV file hosted on GitHub and renders a smooth, cardinal-curved area filled in yellow, with labeled X and Y axes. The implementation uses D3 v7 with several key APIs: `d3.select` to build the SVG container, `d3.scaleBand` and `d3.scaleLinear` for coordinate mapping, `d3.area` with `d3.curveCardinal` for the area shape, and `d3.axisBottom` and `d3.axisLeft` for the axes.