Customizing Axes
This bar chart displays the population of the top 10 most populous countries, using 2018 estimates from the United Nations World Population Prospects. It builds on a basic bar chart by customizing the axes: the y-axis labels are kept while the domain and tick lines are removed, and the x-axis uses a linear scale with a custom tick format function, though currently it renders raw numbers. The chart employs `d3.scaleLinear`, `d3.scaleBand`, `d3.axisBottom`, and `d3.axisLeft`, with an SVG rendering, and includes styled tick text, axis labels, and a title via CSS.