.leaflet-control-defaultextent {
}

.leaflet-control-defaultextent-toggle {
  text-indent: -9999px;
  white-space: nowrap;
  background-image: url("../leaflet/leaflet.defaultextent.png");
  width: 26px;
  height: 26px;
  display: block;
}

/* CSS for high-resolution devices */
@media only screen and (-webkit-min-device-pixel-ratio: 1.5),
  only screen and (-moz-min-device-pixel-ratio: 1.5),
  only screen and (-o-min-device-pixel-ratio: 3/2),
  only screen and (min-device-pixel-ratio: 1.5) {
  .leaflet-control-defaultextent-toggle {
    background-image: url("../leaflet/leaflet.defaultextent@2X.png");
    background-size: 26px 26px;
    background-repeat: no-repeat;
  }
}