This example visualizes one week of temperature data for San Francisco, displaying the values as a line path across an SVG canvas. The chart uses d3.v5 to render the visualization, with the line path drawn in maroon and styled via the `line-path` CSS class. Axis tick labels and lines are formatted with custom font sizes and colors from the stylesheet, and the title and axis labels use sans-serif typography. The code sets up an SVG element and applies D3’s selection and styling methods to present the temperature trend clearly.