JW/EMIS.Web/Content/Bowin.Control.Core/themes/default/combobox.css

.combobox-item {
  padding: 2px;
  font-size: 12px;
  padding: 3px;
  padding-right: 0px;
}
.combobox-item-hover {
  background-color: #eaf2ff;
  color: #000000;
}
.combobox-item-selected {
  background-color: #FBEC88;
  color: #000000;
}