This example demonstrates how to build a basic bar chart using D3.js, rendering bars as SVG rectangles filled with steelblue. The visualization starts with an empty SVG canvas and establishes its dimensions by reading the width and height attributes directly from the SVG element. It uses D3 v5's `select` function to access the SVG container, with the data and bar positions left unwritten in the visible code. The styling applies a font size to text elements and removes page margins for a clean, full-window display.