.double-list-selector .select .menu ul li .arrow {
  display: none;
  position: absolute;
  top: 4px;
  right: 2px;
}

.double-list-selector .select .menu ul li.hover .arrow {
  display: inline-block;
}

.double-list-selector .select:first-child .menu ul li .arrow:after,
.double-list-selector .select:nth-child(2) .menu ul li .arrow:after {
  content: '';
}

.double-list-selector .select:nth-child(2) .menu ul li.left .arrow:after,
.double-list-selector .select:last-child .menu ul li .arrow:after {
  content: '';
}

.double-list-selector .select:nth-child(2) .menu ul li.left .arrow,
.double-list-selector .select:last-child .menu ul li .arrow {
  left: 2px;
}