This interactive 3D scatter plot visualizes the Iris dataset, displaying sepal and petal measurements as distinct sets of markers. The code loads the data from a remote CSV file using `d3.csv` and constructs two `scatter3d` traces, one for each flower part, with configurable marker size, opacity, and line styling. It relies on Plotly’s JavaScript API (`Plotly.newPlot`) to render the chart into an HTML `<div>`, with D3.js handling the data fetching and row unpacking. The layout removes all margins for a clean presentation.