This line chart visualizes monthly average screen time from a digital usage dataset, with each point representing the mean daily screen time for that month. The chart includes labeled axes, styled tick marks, and hover tooltips for data inspection. Built with D3 v7, it loads data from a CSV file, parses dates with `d3.timeParse`, groups entries by month using `d3.rollup`, and renders axes via `d3.axisBottom` and `d3.axisLeft`. An SVG canvas with a white background and drop shadow presents the final visualization.