A line chart plots the win-difference values of eight Overwatch teams over time, with each team labeled on the x-axis and the numeric difference on the y-axis. The chart uses a black, five-pixel-wide stroke to connect the data points, which are loaded from a CSV file. The visualization is built with d3.v5, using `scaleBand` for the categorical x-axis, `scaleLinear` for the y-axis, and `line` to generate the path, with axes added via `axisBottom` and `axisLeft`.