This fork of the D3.js v5 area chart visualizes annual Facebook user counts from 2008 to 2017. The chart combines a smooth line and a filled area to show the growth trend over time, with data loaded from a CSV file. The visualization uses D3's `scaleLinear`, `line`, `area`, `curveBasis`, and `axisBottom`/`axisLeft` APIs, rendering to an SVG canvas. Custom styling is applied via CSS to color the axes, labels, and the pink area fill.