select2样式优化

resources/assets/dcat/sass/components/_form.scss

@@ -118,10 +118,15 @@ select.form-control:not([multiple=multiple]) {
 
 // --------------------- select2 ---------------------
 .select2-container--default .select2-selection--single,
-.select2-container--default .select2-selection--multiple {
+.select2-container--default .select2-selection--multiple,
+.select2-container--default .select2-search--dropdown .select2-search__field {
   border-color: $input-border-color!important;
 }
 
+.select2-container--default .select2-dropdown .select2-search__field:focus, .select2-container--default .select2-search--inline .select2-search__field:focus {
+  border-color: $primary!important;
+}
+
 .select2-container--classic .select2-selection--multiple .select2-selection__rendered li .select2-search__field, .select2-container--default .select2-selection--multiple .select2-selection__rendered li .select2-search__field {
   margin-top: 8px;
 }
@@ -180,6 +185,10 @@ select.form-control:not([multiple=multiple]) {
   padding: .5rem .7rem 0;
 }
 
+.select2-container--default .select2-selection--single .select2-selection__rendered {
+  line-height: 32px!important;
+}
+
 .input-group-sm {
   .select2-container--classic .select2-selection--single, .select2-container--default .select2-selection--single {
     min-height: 31px;