This line chart visualizes the cost of mobile devices over time, with months on the x-axis and cost on the y-axis. Built with D3 v5, the SVG graphic uses time and linear scales, along with `axisBottom` and `axisLeft`, to render the axes. The line path is generated via D3's `line` function, and the data is loaded from a CSV file hosted on GitHub. The chart includes grid lines and axis labels, with the line drawn in black.