This example demonstrates a minimal introduction to D3, showing how to create an SVG canvas that fills the entire browser window. The code uses the `select` and `append` functions from the D3 library to dynamically add an SVG element to the HTML body, then sets its width and height attributes based on the window’s dimensions. The visualization renders nothing beyond an empty, resizable SVG container, serving as a starting point for more complex D3 projects. The page is built from a barebones `index.html` file with no pre-existing content, relying on JavaScript to construct the visual output at runtime.