diff --git a/dist/select2-bootstrap4.css b/dist/select2-bootstrap4.css
index 4bb4db5..60f2c4a 100644
--- a/dist/select2-bootstrap4.css
+++ b/dist/select2-bootstrap4.css
@@ -1,20 +1,25 @@
 .select2-container {
-  display: block; }
-  .select2-container *:focus {
-    outline: 0; }
+  display: block;
+}
+.select2-container *:focus {
+  outline: 0;
+}
 
 .input-group .select2-container--bootstrap4 {
   -webkit-box-flex: 1;
       -ms-flex-positive: 1;
-          flex-grow: 1; }
+          flex-grow: 1;
+}
 
 .input-group-prepend ~ .select2-container--bootstrap4 .select2-selection {
   border-top-left-radius: 0;
-  border-bottom-left-radius: 0; }
+  border-bottom-left-radius: 0;
+}
 
 .input-group > .select2-container--bootstrap4:not(:last-child) .select2-selection {
   border-top-right-radius: 0;
-  border-bottom-right-radius: 0; }
+  border-bottom-right-radius: 0;
+}
 
 .select2-container--bootstrap4 .select2-selection {
   width: 100%;
@@ -24,179 +29,200 @@
   -webkit-transition: border-color 0.15s ease-in-out, -webkit-box-shadow 0.15s ease-in-out;
   transition: border-color 0.15s ease-in-out, -webkit-box-shadow 0.15s ease-in-out;
   transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
-  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, -webkit-box-shadow 0.15s ease-in-out; }
-  @media (prefers-reduced-motion: reduce) {
-    .select2-container--bootstrap4 .select2-selection {
-      -webkit-transition: none;
-      transition: none; } }
-
+  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, -webkit-box-shadow 0.15s ease-in-out;
+}
+@media (prefers-reduced-motion: reduce) {
+  .select2-container--bootstrap4 .select2-selection {
+    -webkit-transition: none;
+    transition: none;
+  }
+}
 .select2-container--bootstrap4.select2-container--focus .select2-selection {
   border-color: #80bdff;
   -webkit-box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
-          box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25); }
-
+          box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
+}
 .select2-container--bootstrap4.select2-container--focus.select2-container--open .select2-selection {
   border-bottom: none;
   border-bottom-right-radius: 0;
-  border-bottom-left-radius: 0; }
-
+  border-bottom-left-radius: 0;
+}
 .select2-container--bootstrap4.select2-container--open.select2-container--above .select2-selection {
   border-top-left-radius: 0;
-  border-top-right-radius: 0; }
-
+  border-top-right-radius: 0;
+}
 .select2-container--bootstrap4.select2-container--open.select2-container--below .select2-selection {
   border-bottom-right-radius: 0;
-  border-bottom-left-radius: 0; }
-
+  border-bottom-left-radius: 0;
+}
 .select2-container--bootstrap4.select2-container--disabled .select2-selection, .select2-container--bootstrap4.select2-container--disabled.select2-container--focus .select2-selection {
   cursor: not-allowed;
   background-color: #e9ecef;
   border-color: #ced4da;
   -webkit-box-shadow: none;
-          box-shadow: none; }
-
+          box-shadow: none;
+}
 .select2-container--bootstrap4.select2-container--disabled .select2-search__field, .select2-container--bootstrap4.select2-container--disabled.select2-container--focus .select2-search__field {
-  background-color: transparent; }
-
-select.is-invalid ~ .select2-container--bootstrap4 .select2-selection,
-form.was-validated select:invalid ~ .select2-container--bootstrap4 .select2-selection {
-  border-color: #dc3545; }
-
-select.is-valid ~ .select2-container--bootstrap4 .select2-selection,
-form.was-validated select:valid ~ .select2-container--bootstrap4 .select2-selection {
-  border-color: #28a745; }
-
+  background-color: transparent;
+}
+select.is-invalid ~ .select2-container--bootstrap4 .select2-selection, form.was-validated select:invalid ~ .select2-container--bootstrap4 .select2-selection {
+  border-color: #dc3545;
+}
+select.is-valid ~ .select2-container--bootstrap4 .select2-selection, form.was-validated select:valid ~ .select2-container--bootstrap4 .select2-selection {
+  border-color: #28a745;
+}
 .select2-container--bootstrap4 .select2-search {
-  width: 100%; }
-
+  width: 100%;
+}
 .select2-container--bootstrap4 .select2-dropdown {
   border-color: #ced4da;
-  border-radius: 0; }
-  .select2-container--bootstrap4 .select2-dropdown.select2-dropdown--below {
-    border-top: none;
-    border-bottom-right-radius: 0.25rem;
-    border-bottom-left-radius: 0.25rem; }
-  .select2-container--bootstrap4 .select2-dropdown.select2-dropdown--above {
-    border-top: 1px solid #ced4da;
-    border-top-left-radius: 0.25rem;
-    border-top-right-radius: 0.25rem; }
-  .select2-container--bootstrap4 .select2-dropdown .select2-results__option[aria-selected="true"] {
-    color: #212529;
-    background-color: #f2f2f2; }
-
+  border-radius: 0;
+}
+.select2-container--bootstrap4 .select2-dropdown.select2-dropdown--below {
+  border-top: none;
+  border-bottom-right-radius: 0.25rem;
+  border-bottom-left-radius: 0.25rem;
+}
+.select2-container--bootstrap4 .select2-dropdown.select2-dropdown--above {
+  border-top: 1px solid #ced4da;
+  border-top-left-radius: 0.25rem;
+  border-top-right-radius: 0.25rem;
+}
+.select2-container--bootstrap4 .select2-dropdown .select2-results__option[aria-selected=true] {
+  color: #212529;
+  background-color: #f2f2f2;
+}
 .select2-container--bootstrap4 .select2-results__option--highlighted,
-.select2-container--bootstrap4 .select2-results__option--highlighted.select2-results__option[aria-selected="true"] {
+.select2-container--bootstrap4 .select2-results__option--highlighted.select2-results__option[aria-selected=true] {
   color: #fff;
-  background-color: #007bff; }
-
-.select2-container--bootstrap4 .select2-results__option[role="group"] {
-  padding: 0; }
-  .select2-container--bootstrap4 .select2-results__option[role="group"] .select2-results__options--nested .select2-results__option {
-    padding-left: 1em; }
-
+  background-color: #007bff;
+}
+.select2-container--bootstrap4 .select2-results__option[role=group] {
+  padding: 0;
+}
+.select2-container--bootstrap4 .select2-results__option[role=group] .select2-results__options--nested .select2-results__option {
+  padding-left: 1em;
+}
 .select2-container--bootstrap4 .select2-results__option {
-  padding: 0.375rem 0.75rem; }
-
+  padding: 0.375rem 0.75rem;
+}
 .select2-container--bootstrap4 .select2-results > .select2-results__options {
   max-height: 15em;
-  overflow-y: auto; }
-
+  overflow-y: auto;
+}
 .select2-container--bootstrap4 .select2-results__group {
   display: list-item;
   padding: 6px;
-  color: #6c757d; }
-
+  color: #6c757d;
+}
 .select2-container--bootstrap4 .select2-selection__clear {
   float: right;
-  width: .9em;
-  height: .9em;
-  padding-left: .15em;
-  margin-top: .7em;
-  margin-right: .3em;
-  line-height: .75em;
+  width: 0.9em;
+  height: 0.9em;
+  padding-left: 0.15em;
+  margin-top: 0.7em;
+  margin-right: 0.3em;
+  line-height: 0.75em;
   color: #f8f9fa;
   background-color: #c8c8c8;
-  border-radius: 100%; }
-  .select2-container--bootstrap4 .select2-selection__clear:hover {
-    background-color: #afafaf; }
+  border-radius: 100%;
+}
+.select2-container--bootstrap4 .select2-selection__clear:hover {
+  background-color: #afafaf;
+}
 
 .select2-container--bootstrap4 .select2-selection--single {
-  height: calc(1.5em + 0.75rem + 2px) !important; }
-  .select2-container--bootstrap4 .select2-selection--single .select2-selection__placeholder {
-    line-height: calc(1.5em + 0.75rem);
-    color: #6c757d; }
-  .select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow {
-    position: absolute;
-    top: 50%;
-    right: 3px;
-    width: 20px; }
-    .select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow b {
-      position: absolute;
-      top: 60%;
-      left: 50%;
-      width: 0;
-      height: 0;
-      margin-top: -2px;
-      margin-left: -4px;
-      border-color: #343a40 transparent transparent transparent;
-      border-style: solid;
-      border-width: 5px 4px 0; }
-  .select2-container--bootstrap4 .select2-selection--single .select2-selection__rendered {
-    padding-left: 0.75rem;
-    line-height: calc(1.5em + 0.75rem);
-    color: #495057; }
+  height: calc(1.5em + 0.75rem + 2px) !important;
+}
+.select2-container--bootstrap4 .select2-selection--single .select2-selection__placeholder {
+  line-height: calc(1.5em + 0.75rem);
+  color: #6c757d;
+}
+.select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow {
+  position: absolute;
+  top: 50%;
+  right: 3px;
+  width: 20px;
+}
+.select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow b {
+  position: absolute;
+  top: 60%;
+  left: 50%;
+  width: 0;
+  height: 0;
+  margin-top: -2px;
+  margin-left: -4px;
+  border-color: #343a40 transparent transparent transparent;
+  border-style: solid;
+  border-width: 5px 4px 0;
+}
+.select2-container--bootstrap4 .select2-selection--single .select2-selection__rendered {
+  padding-left: 0.75rem;
+  line-height: calc(1.5em + 0.75rem);
+  color: #495057;
+}
 
 .select2-search--dropdown .select2-search__field {
   padding: 0.375rem 0.75rem;
   border: 1px solid #ced4da;
-  border-radius: 0.25rem; }
+  border-radius: 0.25rem;
+}
 
 .select2-results__message {
-  color: #6c757d; }
+  color: #6c757d;
+}
 
 .select2-container--bootstrap4 .select2-selection--multiple {
-  min-height: calc(1.5em + 0.75rem + 2px) !important; }
-  .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__rendered {
-    -webkit-box-sizing: border-box;
-            box-sizing: border-box;
-    width: 100%;
-    padding: 0 0.375rem;
-    margin: 0;
-    list-style: none; }
-  .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice {
-    float: left;
-    padding: 0;
-    padding-right: 0.75rem;
-    margin-top: calc(0.375rem - 2px);
-    margin-right: 0.375rem;
-    color: #495057;
-    cursor: pointer;
-    border: 1px solid #bdc6d0;
-    border-radius: 0.2rem; }
-  .select2-container--bootstrap4 .select2-selection--multiple .select2-search__field {
-    color: #495057; }
-  .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice + .select2-search {
-    width: 0; }
-  .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove {
-    float: left;
-    padding-right: 3px;
-    padding-left: 3px;
-    margin-right: 1px;
-    margin-left: 3px;
-    font-weight: 700;
-    color: #bdc6d0; }
-    .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove:hover {
-      color: #343a40; }
-  .select2-container--bootstrap4 .select2-selection--multiple .select2-selection__clear {
-    position: absolute !important;
-    top: 0;
-    right: .7em;
-    float: none;
-    margin-right: 0; }
-
+  min-height: calc(1.5em + 0.75rem + 2px) !important;
+}
+.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__rendered {
+  -webkit-box-sizing: border-box;
+          box-sizing: border-box;
+  width: 100%;
+  padding: 0 0.375rem;
+  margin: 0;
+  list-style: none;
+}
+.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice {
+  float: left;
+  padding: 0;
+  padding-right: 0.75rem;
+  margin-top: calc(0.375rem - 2px);
+  margin-right: 0.375rem;
+  color: #495057;
+  cursor: pointer;
+  border: 1px solid #bdc6d0;
+  border-radius: 0.2rem;
+}
+.select2-container--bootstrap4 .select2-selection--multiple .select2-search__field {
+  color: #495057;
+}
+.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice + .select2-search {
+  width: 0;
+}
+.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove {
+  float: left;
+  padding-right: 3px;
+  padding-left: 3px;
+  margin-right: 1px;
+  margin-left: 3px;
+  font-weight: 700;
+  color: #bdc6d0;
+}
+.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove:hover {
+  color: #343a40;
+}
+.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__clear {
+  position: absolute !important;
+  top: 0;
+  right: 0.7em;
+  float: none;
+  margin-right: 0;
+}
 .select2-container--bootstrap4.select2-container--disabled .select2-selection--multiple .select2-selection__choice {
   padding: 0 5px;
-  cursor: not-allowed; }
-  .select2-container--bootstrap4.select2-container--disabled .select2-selection--multiple .select2-selection__choice .select2-selection__choice__remove {
-    display: none; }
-
+  cursor: not-allowed;
+}
+.select2-container--bootstrap4.select2-container--disabled .select2-selection--multiple .select2-selection__choice .select2-selection__choice__remove {
+  display: none;
+}
diff --git a/dist/select2-bootstrap4.min.css b/dist/select2-bootstrap4.min.css
index 6d36591..9f485f7 100644
--- a/dist/select2-bootstrap4.min.css
+++ b/dist/select2-bootstrap4.min.css
@@ -1,2 +1 @@
-.select2-container{display:block}.select2-container *:focus{outline:0}.input-group .select2-container--bootstrap4{-webkit-box-flex:1;-ms-flex-positive:1;flex-grow:1}.input-group-prepend ~ .select2-container--bootstrap4 .select2-selection{border-top-left-radius:0;border-bottom-left-radius:0}.input-group>.select2-container--bootstrap4:not(:last-child) .select2-selection{border-top-right-radius:0;border-bottom-right-radius:0}.select2-container--bootstrap4 .select2-selection{width:100%;background-color:#fff;border:1px solid #ced4da;border-radius:.25rem;-webkit-transition:border-color 0.15s ease-in-out,-webkit-box-shadow 0.15s ease-in-out;transition:border-color 0.15s ease-in-out,-webkit-box-shadow 0.15s ease-in-out;transition:border-color 0.15s ease-in-out,box-shadow 0.15s ease-in-out;transition:border-color 0.15s ease-in-out,box-shadow 0.15s ease-in-out,-webkit-box-shadow 0.15s ease-in-out}@media (prefers-reduced-motion: reduce){.select2-container--bootstrap4 .select2-selection{-webkit-transition:none;transition:none}}.select2-container--bootstrap4.select2-container--focus .select2-selection{border-color:#80bdff;-webkit-box-shadow:0 0 0 .2rem rgba(0,123,255,0.25);box-shadow:0 0 0 .2rem rgba(0,123,255,0.25)}.select2-container--bootstrap4.select2-container--focus.select2-container--open .select2-selection{border-bottom:none;border-bottom-right-radius:0;border-bottom-left-radius:0}.select2-container--bootstrap4.select2-container--open.select2-container--above .select2-selection{border-top-left-radius:0;border-top-right-radius:0}.select2-container--bootstrap4.select2-container--open.select2-container--below .select2-selection{border-bottom-right-radius:0;border-bottom-left-radius:0}.select2-container--bootstrap4.select2-container--disabled .select2-selection,.select2-container--bootstrap4.select2-container--disabled.select2-container--focus .select2-selection{cursor:not-allowed;background-color:#e9ecef;border-color:#ced4da;-webkit-box-shadow:none;box-shadow:none}.select2-container--bootstrap4.select2-container--disabled .select2-search__field,.select2-container--bootstrap4.select2-container--disabled.select2-container--focus .select2-search__field{background-color:transparent}select.is-invalid ~ .select2-container--bootstrap4 .select2-selection,form.was-validated select:invalid ~ .select2-container--bootstrap4 .select2-selection{border-color:#dc3545}select.is-valid ~ .select2-container--bootstrap4 .select2-selection,form.was-validated select:valid ~ .select2-container--bootstrap4 .select2-selection{border-color:#28a745}.select2-container--bootstrap4 .select2-search{width:100%}.select2-container--bootstrap4 .select2-dropdown{border-color:#ced4da;border-radius:0}.select2-container--bootstrap4 .select2-dropdown.select2-dropdown--below{border-top:none;border-bottom-right-radius:.25rem;border-bottom-left-radius:.25rem}.select2-container--bootstrap4 .select2-dropdown.select2-dropdown--above{border-top:1px solid #ced4da;border-top-left-radius:.25rem;border-top-right-radius:.25rem}.select2-container--bootstrap4 .select2-dropdown .select2-results__option[aria-selected="true"]{color:#212529;background-color:#f2f2f2}.select2-container--bootstrap4 .select2-results__option--highlighted,.select2-container--bootstrap4 .select2-results__option--highlighted.select2-results__option[aria-selected="true"]{color:#fff;background-color:#007bff}.select2-container--bootstrap4 .select2-results__option[role="group"]{padding:0}.select2-container--bootstrap4 .select2-results__option[role="group"] .select2-results__options--nested .select2-results__option{padding-left:1em}.select2-container--bootstrap4 .select2-results__option{padding:.375rem .75rem}.select2-container--bootstrap4 .select2-results>.select2-results__options{max-height:15em;overflow-y:auto}.select2-container--bootstrap4 .select2-results__group{display:list-item;padding:6px;color:#6c757d}.select2-container--bootstrap4 .select2-selection__clear{float:right;width:.9em;height:.9em;padding-left:.15em;margin-top:.7em;margin-right:.3em;line-height:.75em;color:#f8f9fa;background-color:#c8c8c8;border-radius:100%}.select2-container--bootstrap4 .select2-selection__clear:hover{background-color:#afafaf}.select2-container--bootstrap4 .select2-selection--single{height:calc(1.5em + .75rem + 2px) !important}.select2-container--bootstrap4 .select2-selection--single .select2-selection__placeholder{line-height:calc(1.5em + .75rem);color:#6c757d}.select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow{position:absolute;top:50%;right:3px;width:20px}.select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow b{position:absolute;top:60%;left:50%;width:0;height:0;margin-top:-2px;margin-left:-4px;border-color:#343a40 transparent transparent transparent;border-style:solid;border-width:5px 4px 0}.select2-container--bootstrap4 .select2-selection--single .select2-selection__rendered{padding-left:.75rem;line-height:calc(1.5em + .75rem);color:#495057}.select2-search--dropdown .select2-search__field{padding:.375rem .75rem;border:1px solid #ced4da;border-radius:.25rem}.select2-results__message{color:#6c757d}.select2-container--bootstrap4 .select2-selection--multiple{min-height:calc(1.5em + .75rem + 2px) !important}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__rendered{-webkit-box-sizing:border-box;box-sizing:border-box;width:100%;padding:0 .375rem;margin:0;list-style:none}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice{float:left;padding:0;padding-right:.75rem;margin-top:calc(.375rem - 2px);margin-right:.375rem;color:#495057;cursor:pointer;border:1px solid #bdc6d0;border-radius:.2rem}.select2-container--bootstrap4 .select2-selection--multiple .select2-search__field{color:#495057}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice+.select2-search{width:0}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove{float:left;padding-right:3px;padding-left:3px;margin-right:1px;margin-left:3px;font-weight:700;color:#bdc6d0}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove:hover{color:#343a40}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__clear{position:absolute !important;top:0;right:.7em;float:none;margin-right:0}.select2-container--bootstrap4.select2-container--disabled .select2-selection--multiple .select2-selection__choice{padding:0 5px;cursor:not-allowed}.select2-container--bootstrap4.select2-container--disabled .select2-selection--multiple .select2-selection__choice .select2-selection__choice__remove{display:none}
-
+.select2-container{display:block}.select2-container *:focus{outline:0}.input-group .select2-container--bootstrap4{-webkit-box-flex:1;-ms-flex-positive:1;flex-grow:1}.input-group-prepend~.select2-container--bootstrap4 .select2-selection{border-top-left-radius:0;border-bottom-left-radius:0}.input-group>.select2-container--bootstrap4:not(:last-child) .select2-selection{border-top-right-radius:0;border-bottom-right-radius:0}.select2-container--bootstrap4 .select2-selection{width:100%;background-color:#fff;border:1px solid #ced4da;border-radius:.25rem;-webkit-transition:border-color .15s ease-in-out,-webkit-box-shadow .15s ease-in-out;transition:border-color .15s ease-in-out,-webkit-box-shadow .15s ease-in-out;transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out;transition:border-color .15s ease-in-out,box-shadow .15s ease-in-out,-webkit-box-shadow .15s ease-in-out}@media(prefers-reduced-motion: reduce){.select2-container--bootstrap4 .select2-selection{-webkit-transition:none;transition:none}}.select2-container--bootstrap4.select2-container--focus .select2-selection{border-color:#80bdff;-webkit-box-shadow:0 0 0 .2rem rgba(0,123,255,.25);box-shadow:0 0 0 .2rem rgba(0,123,255,.25)}.select2-container--bootstrap4.select2-container--focus.select2-container--open .select2-selection{border-bottom:none;border-bottom-right-radius:0;border-bottom-left-radius:0}.select2-container--bootstrap4.select2-container--open.select2-container--above .select2-selection{border-top-left-radius:0;border-top-right-radius:0}.select2-container--bootstrap4.select2-container--open.select2-container--below .select2-selection{border-bottom-right-radius:0;border-bottom-left-radius:0}.select2-container--bootstrap4.select2-container--disabled .select2-selection,.select2-container--bootstrap4.select2-container--disabled.select2-container--focus .select2-selection{cursor:not-allowed;background-color:#e9ecef;border-color:#ced4da;-webkit-box-shadow:none;box-shadow:none}.select2-container--bootstrap4.select2-container--disabled .select2-search__field,.select2-container--bootstrap4.select2-container--disabled.select2-container--focus .select2-search__field{background-color:rgba(0,0,0,0)}select.is-invalid~.select2-container--bootstrap4 .select2-selection,form.was-validated select:invalid~.select2-container--bootstrap4 .select2-selection{border-color:#dc3545}select.is-valid~.select2-container--bootstrap4 .select2-selection,form.was-validated select:valid~.select2-container--bootstrap4 .select2-selection{border-color:#28a745}.select2-container--bootstrap4 .select2-search{width:100%}.select2-container--bootstrap4 .select2-dropdown{border-color:#ced4da;border-radius:0}.select2-container--bootstrap4 .select2-dropdown.select2-dropdown--below{border-top:none;border-bottom-right-radius:.25rem;border-bottom-left-radius:.25rem}.select2-container--bootstrap4 .select2-dropdown.select2-dropdown--above{border-top:1px solid #ced4da;border-top-left-radius:.25rem;border-top-right-radius:.25rem}.select2-container--bootstrap4 .select2-dropdown .select2-results__option[aria-selected=true]{color:#212529;background-color:#f2f2f2}.select2-container--bootstrap4 .select2-results__option--highlighted,.select2-container--bootstrap4 .select2-results__option--highlighted.select2-results__option[aria-selected=true]{color:#fff;background-color:#007bff}.select2-container--bootstrap4 .select2-results__option[role=group]{padding:0}.select2-container--bootstrap4 .select2-results__option[role=group] .select2-results__options--nested .select2-results__option{padding-left:1em}.select2-container--bootstrap4 .select2-results__option{padding:.375rem .75rem}.select2-container--bootstrap4 .select2-results>.select2-results__options{max-height:15em;overflow-y:auto}.select2-container--bootstrap4 .select2-results__group{display:list-item;padding:6px;color:#6c757d}.select2-container--bootstrap4 .select2-selection__clear{float:right;width:.9em;height:.9em;padding-left:.15em;margin-top:.7em;margin-right:.3em;line-height:.75em;color:#f8f9fa;background-color:#c8c8c8;border-radius:100%}.select2-container--bootstrap4 .select2-selection__clear:hover{background-color:#afafaf}.select2-container--bootstrap4 .select2-selection--single{height:calc(1.5em + 0.75rem + 2px) !important}.select2-container--bootstrap4 .select2-selection--single .select2-selection__placeholder{line-height:calc(1.5em + 0.75rem);color:#6c757d}.select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow{position:absolute;top:50%;right:3px;width:20px}.select2-container--bootstrap4 .select2-selection--single .select2-selection__arrow b{position:absolute;top:60%;left:50%;width:0;height:0;margin-top:-2px;margin-left:-4px;border-color:#343a40 rgba(0,0,0,0) rgba(0,0,0,0) rgba(0,0,0,0);border-style:solid;border-width:5px 4px 0}.select2-container--bootstrap4 .select2-selection--single .select2-selection__rendered{padding-left:.75rem;line-height:calc(1.5em + 0.75rem);color:#495057}.select2-search--dropdown .select2-search__field{padding:.375rem .75rem;border:1px solid #ced4da;border-radius:.25rem}.select2-results__message{color:#6c757d}.select2-container--bootstrap4 .select2-selection--multiple{min-height:calc(1.5em + 0.75rem + 2px) !important}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__rendered{-webkit-box-sizing:border-box;box-sizing:border-box;width:100%;padding:0 .375rem;margin:0;list-style:none}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice{float:left;padding:0;padding-right:.75rem;margin-top:calc(0.375rem - 2px);margin-right:.375rem;color:#495057;cursor:pointer;border:1px solid #bdc6d0;border-radius:.2rem}.select2-container--bootstrap4 .select2-selection--multiple .select2-search__field{color:#495057}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice+.select2-search{width:0}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove{float:left;padding-right:3px;padding-left:3px;margin-right:1px;margin-left:3px;font-weight:700;color:#bdc6d0}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__choice__remove:hover{color:#343a40}.select2-container--bootstrap4 .select2-selection--multiple .select2-selection__clear{position:absolute !important;top:0;right:.7em;float:none;margin-right:0}.select2-container--bootstrap4.select2-container--disabled .select2-selection--multiple .select2-selection__choice{padding:0 5px;cursor:not-allowed}.select2-container--bootstrap4.select2-container--disabled .select2-selection--multiple .select2-selection__choice .select2-selection__choice__remove{display:none}
diff --git a/package.json b/package.json
index a3fd9eb..5aee548 100644
--- a/package.json
+++ b/package.json
@@ -36,9 +36,9 @@
     "bootstrap": "^4.6.0",
     "css-loader": "^5.0.1",
     "mini-css-extract-plugin": "^1.3.4",
-    "node-sass": "^5.0.0",
     "postcss": "^8.2.4",
     "postcss-loader": "^4.2.0",
+    "sass": "^1.27.0",
     "sass-loader": "^10.1.1",
     "style-loader": "^2.0.0",
     "stylelint": "^13.9.0",
diff --git a/src/_multiple.scss b/src/_multiple.scss
index 6531c67..20fe8ec 100644
--- a/src/_multiple.scss
+++ b/src/_multiple.scss
@@ -1,3 +1,5 @@
+@use "sass:math";
+
 .select2-container--bootstrap4 {
   .select2-selection--multiple {
 
@@ -8,7 +10,7 @@
     .select2-selection__rendered {
       box-sizing: border-box;
       width: 100%;
-      padding: 0 $input-padding-x / 2;
+      padding: 0 math.div($input-padding-x, 2);
       margin: 0;
       list-style: none;
     }
@@ -19,7 +21,7 @@
       padding: 0;
       padding-right: $input-padding-x;
       margin-top: calc(#{$input-padding-y} - 2px);
-      margin-right: $input-padding-x / 2;
+      margin-right: math.div($input-padding-x, 2);
       color: $input-color;
       cursor: pointer;
       border: 1px solid darken($light, 20%);