.select2-selection.select2-selection--single.select-sm {
  height: 30px;
  padding: 5px 10px;
  font-size: 12px;
  line-height: 1.5;
}
.select2-selection.select2-selection--single.select-sm .select2-selection__rendered {
  margin-top: -5px;
}
.select2-selection.select2-selection--single.select-sm .select2-selection__arrow {
  top: 0px;
}
.select2-dropdown.select-sm .select2-search .select2-search__field {
  font-size: 12px;
}
.select2-dropdown.select-sm .select2-results {
  font-size: 12px;
}
.select2-dropdown.select-sm .select2-results .select2-results__option {
  padding: 5px 10px;
} 

/* Fix width with long value */
.form-group .select2-container {
  width: 100%;
  display: table;
  table-layout: fixed;
}