This area chart visualizes the distribution of student counts across total marks. The chart uses a green gradient fill beneath the line to emphasize the area under the curve, with labeled axes for "Total Marks" and "no_of_Students." The visualization is built with D3 v7, loading CSV data from a GitHub gist, parsing it with `d3.csv`, and scaling the x and y axes with `d3.scaleLinear`. The area path is generated using the `d3.area` function, and a custom `linearGradient` is defined and applied to the SVG path.