This scatter plot shows the relationship between sleep duration and age, with age on the y-axis and sleep duration on the x-axis, using data from a CSV file fetched from a GitHub gist. The visualization is built with D3 v6, rendering circles as SVG elements within a full-window canvas. The code implements a reusable scatter plot function with configurable width, height, margins, and radius, and uses D3's scaleLinear for axis scaling and axisLeft/axisBottom for the axes. Axis labels are added as text elements via SVG.