This example demonstrates how a D3.js visualization can respond dynamically to browser window resizing. It draws a large green X shape using two SVG line elements that stretch to fill the entire viewport, with the chart container styled via CSS to occupy the full page. On every resize event, a `redraw()` function reads the container’s `clientWidth` and `clientHeight`, updates the SVG’s width and height attributes, and repositions the lines using the data-join pattern with `selectAll` and `merge`. The code relies on D3 v5 and the native browser `window.addEventListener` for resize handling.