This line chart displays Nike sales from 2009 to 2019, with years on the x-axis and sales figures on the y-axis. The visualization uses D3 v5 with SVG rendering, employing `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` to construct the plot. Data is loaded via `csv` from a GitHub gist, with years parsed using `d3.timeParse` and sales converted to numbers. Grid lines and axis labels are styled through CSS, while a maroon path represents the sales trend.