This line chart displays a week of temperature in San Francisco, with time on the x-axis and temperature in degrees Celsius on the y-axis. The chart uses D3 v5 to render SVG elements, including a smooth curve generated by `d3.line` with `curveBasis`, and axes created with `axisLeft` and `axisBottom`. Data is loaded as CSV from a remote URL and parsed into JavaScript `Date` objects. The visualization includes axis labels and a title, styled via external CSS, with the line drawn in maroon.