This line chart shows sales data over time, with years on the x-axis and sales values on the y-axis, using orange strokes to highlight trends. It loads CSV data from a GitHub gist, parsing dates with `d3.timeParse` and rendering an SVG via D3 v5’s `scaleTime`, `scaleLinear`, `axisBottom`, `axisLeft`, and `line` functions. Grid lines and axis labels are customized through CSS, while margins and tick padding adjust the layout.