doc/img/states/quarter.svg

<svg  xmlns="http://www.w3.org/2000/svg"
      xmlns:xlink="http://www.w3.org/1999/xlink"
      viewBox="0 0 200 50">
    <rect x = "0" y = "0" width = "200" height = "50" fill = "#000" />
    <rect x = "3" y = "3" width = "194" height = "44" fill = "#fff" />
    <rect x = "7" y = "7" width = "186" height = "36" fill = "#000" />
    <rect x = "10" y = "10" width = "45" height = "30" fill = "#fff" />
</svg>