xx-4x3

pnpm dlx shadcn@latest add https://opensourceicon.com/r/flag/xx-4x3.json

<svg xmlns="http://www.w3.org/2000/svg" width="96" height="72" viewBox="0 0 640 480"><path fill="#fff" fill-rule="evenodd" stroke="#adb5bd" stroke-width="1.1" d="M.5.5h638.9v478.9H.5z"/><path fill="none" stroke="#adb5bd" stroke-width="1.1" d="m.5.5l639 479m0-479l-639 479"/></svg>