This example displays a line chart of sales data over time. It uses a time-scaled x-axis for years and a linear y-axis for sales values. The visualization is built with D3 v5, using `d3.scaleLinear`, `d3.scaleTime`, `d3.line`, and axis utilities. The SVG is rendered with a path element, and the axes are customized with brown tick lines and purple tick labels. Data is loaded from a GitHub gist CSV file using `d3.csv`.