This example shows the price of Bitcoin over time, using an area chart to emphasize the overall trend. It demonstrates how to customize axis labels, fonts, and tick marks to create a polished, readable visualization. The code uses D3's `scaleTime` and `scaleLinear` for scaling, `axisLeft` and `axisBottom` for axes, and an `area` generator for the chart's shape. Data is loaded from a comma-separated file and rendered as an SVG.