fix(dropdown-selecct): dropdown select css for chromium-based browsers

Author: badejayayesubabu

src/scss/components/dropdown-select/mixins/SelectControl.scss

@@ -42,6 +42,7 @@
   @else {
     background-color: $gray-100;
     color: $gray-700;
+    opacity: 1;
   }
 }