UI: refactoring style

ui-ngx/src/app/shared/components/rule-chain/rule-chain-select.component.html

@@ -15,7 +15,7 @@
     limitations under the License.
 
 -->
-<mat-form-field subscriptSizing="dynamic">
+<mat-form-field class="tb-rule-select" subscriptSizing="dynamic">
   <mat-icon matPrefix>settings_ethernet</mat-icon>
   <mat-select fxFlex
               class="tb-rule-chain-select"

ui-ngx/src/app/shared/components/rule-chain/rule-chain-select.component.scss

@@ -25,8 +25,10 @@
 }
 
 :host ::ng-deep {
-  .mat-mdc-form-field-infix {
+  .mat-mdc-form-field.tb-rule-select .mdc-text-field {
-    min-height: 48px;
+    .mat-mdc-form-field-infix {
-    padding: 12px 0 !important;
+      min-height: 48px;
+      padding: 12px 0;
+    }
   }
 }