.leaflet-control-zoomhome a {
  font: bold 18px "Lucida Console", Monaco, monospace;
}

a.leaflet-control-zoomhome-in,
a.leaflet-control-zoomhome-out {
  font-size: 1.5em;
  line-height: 26px;
  color: #000 !important;
}

.leaflet-control-zoomhome a:not(.leaflet-control-zoomhome-out) {
  border-bottom: 1px solid #ccc !important;
}