This scatterplot displays the classic Iris flower dataset, allowing users to compare any two measured attributes (sepal length, sepal width, petal length, petal width) against each other. Points are colored by species (setosa, versicolor, virginica) according to CSS classes. The visualization uses D3 v5 with selectors, scales, and axes from the `d3` module. Two dropdown menus dynamically update the plot's x- and y-axis mappings, while the underlying data is loaded from a CSV file.