This example shows a Poorna area chart visualizing the number of students against their total marks, using data loaded from a CSV file hosted on GitHub. The chart displays a filled area beneath the line, with a blue gradient transitioning from semi-transparent at the bottom to fully transparent at the top. Built with D3 v7 and rendered as SVG, the code uses `d3.csv` to fetch the data, `d3.area` to generate the area path, `d3.scaleLinear` for both axes, and `d3.axisBottom` and `d3.axisLeft` to draw the axes. The visualization includes labeled x and y axes to clarify the relationship between the variables.