AdminLTE/plugins/bootstrap4-duallistbox/bootstrap-duallistbox.css

/*
 *  Bootstrap Duallistbox - v4.0.1
 *  A responsive dual listbox widget optimized for Twitter Bootstrap. It works on all modern browsers and on touch devices.
 *  http://www.virtuosoft.eu/code/bootstrap-duallistbox/
 *
 *  Made by István Ujj-Mészáros
 *  Under Apache License v2.0 License
 */
.bootstrap-duallistbox-container .buttons {
  width: 100%;
  margin-bottom: -1px;
}

.bootstrap-duallistbox-container label {
  display: block;
}

.bootstrap-duallistbox-container .info {
  display: inline-block;
  margin-bottom: 5px;
  font-size: 11px;
}

.bootstrap-duallistbox-container .clear1,
.bootstrap-duallistbox-container .clear2 {
  display: none;
  font-size: 10px;
}

.bootstrap-duallistbox-container .box1.filtered .clear1,
.bootstrap-duallistbox-container .box2.filtered .clear2 {
  display: inline-block;
}

.bootstrap-duallistbox-container .move,
.bootstrap-duallistbox-container .remove {
  width: 50%;
  box-sizing: content-box;
}

.bootstrap-duallistbox-container .btn-group .btn {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}
.bootstrap-duallistbox-container:not(.moveonselect) select {
  border-top-left-radius: 0;
  border-top-right-radius: 0;
}
.bootstrap-duallistbox-container .moveall,
.bootstrap-duallistbox-container .removeall {
  width: 50%;
  box-sizing: content-box;
}

.bootstrap-duallistbox-container.bs2compatible .btn-group > .btn + .btn {
  margin-left: 0;
}

.bootstrap-duallistbox-container select {
  width: 100%;
  height: 300px;
  padding: 0;
}

.bootstrap-duallistbox-container .filter {
  display: inline-block;
  width: 100%;
  height: 31px;
  margin: 0 0 5px 0;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

.bootstrap-duallistbox-container .filter.placeholder {
  color: #aaa;
}

.bootstrap-duallistbox-container.moveonselect .move,
.bootstrap-duallistbox-container.moveonselect .remove {
  display:none;
}

.bootstrap-duallistbox-container.moveonselect .moveall,
.bootstrap-duallistbox-container.moveonselect .removeall {
  width: 100%;
}