This React Starter example demonstrates how to resize an SVG element by adjusting a wrapper div's dimensions through button clicks. The application uses React's `useState` and `useRef` hooks alongside D3's `select` to read and update CSS width values dynamically. A `d3.select` call retrieves the element's current width, which increments or decrements by 50 pixels with each button press. The rendered SVG fills the container with a light gray background, showing a minimal integration of React state management with D3 utilities for DOM manipulation and styling.