This area chart visualizes the monthly 2024 closing prices of Bitcoin (BTC) and Ethereum (ETH) from an embedded CSV dataset. It overlays two semi-transparent filled regions with distinct colors, with a solid line stroke on top of each to clarify the trend. The visualization is built using d3.scaleTime, d3.scaleLinear, and the d3.area and d3.line generators, rendering to SVG with axes formatted via d3.axisBottom and d3.axisLeft. A legend identifies each asset, and the chart includes axis titles for month and price.