fresh block
Three green rectangles of varying heights stand in a row on a blank SVG canvas, each bar’s x-position and height mapping directly to the same numeric value from a hardcoded three-element array. The visualization uses D3 v4’s data join (`selectAll`, `data`, `enter`) to append `rect` elements, setting their `width` to a fixed 25 pixels while deriving `height` and `x` from each datum. The SVG container is created via `d3.select("body").append("svg")`, with the chart’s simplistic styling and minimal layout emphasizing the direct translation of data values into geometric properties.