fineui/src/css/widget/multiselect/multiselect.css

.bi-multi-select-combo .multi-select-trigger-icon-button {
  font-size: 16px;
}
.bi-multi-select-combo .trigger-up {
  display: none;
}
.bi-multi-select-combo .trigger-down {
  display: block;
}
.bi-multi-select-combo.combo-show .trigger-up {
  display: block;
}
.bi-multi-select-combo.combo-show .trigger-down {
  display: none;
}

.bi-multi-select-insert-combo .multi-select-trigger-icon-button {
  font-size: 16px;
}
.bi-multi-select-insert-combo .trigger-up {
  display: none;
}
.bi-multi-select-insert-combo .trigger-down {
  display: block;
}
.bi-multi-select-insert-combo.combo-show .trigger-up {
  display: block;
}
.bi-multi-select-insert-combo.combo-show .trigger-down {
  display: none;
}


.bi-multi-select-trigger {
  -webkit-border-radius: 2px 2px 2px 2px;
  -moz-border-radius: 2px 2px 2px 2px;
  border-radius: 2px 2px 2px 2px;
}