This example uses Plotly’s `scatter3d` trace type to render an interactive 3D scatter plot of Body Mass Index data, mapping Weight, Height, and BodyFat to the x, y, and z axes. The data is loaded from a remote CSV file using `d3.csv` and then unpacked into arrays. The chart emphasizes markers with a square symbol, red fill, and pink outline, while axis titles are styled in purple. The visualization is built with the Plotly `newPlot` method and embedded in a minimal HTML page that also loads D3.js.