change class name in custom template CSS

Author: pankajparkar

src/app/demos/doc-demos/custom-template/custom-template.component.html

@@ -3,7 +3,7 @@
   [options]="options"
   [propertyMap]="{ img: 'flag' }">
   <ng-template let-option="option">
-      <style> .test { display: flex;align-items:center; } </style>
+      <style> .custom-option { display: flex;align-items:center; } </style>
       <div class="custom-option">
         <img [src]="option.img" width="40px" height="40px" [attr.alt]="option.name" />
         {{ option.name }}