Cleanup Dropdown UI

src/app/app.ts

@@ -14,10 +14,12 @@ export class App {
 
   dropdownOptions: DropdownOption[] = [
     { label: 'English', value: "EN" },
-    { label: '한국어', value: "KR" }
+    { label: '한국어', value: "KR" },
+    { label: '日本語', value: "JP" },
   ];
 
   selectedDropdownValue = signal<any>(null);
+  selectedSize = signal<string | null>(null);
 
   handleToggle(state: boolean) {
     console.log('Toggle state:', state);