This visualization displays the population of the top 10 most populous countries as horizontal bars, using data from the 2018 United Nations World Population Prospects estimate. It demonstrates custom axis styling with D3 v5, including tick formatting, tick line removal, and axis labels styled via CSS. The code uses `scaleLinear`, `scaleBand`, `axisLeft`, and `axisBottom` from the D3 module, and the axis tick labels are formatted from billions to the short scale (e.g., “G” replaced by “B”). Data is loaded from a CSV file and rendered as SVG with steelblue rectangles.