angular material check drag and drop location on html code example

Example 1: angular material drag and drop not working

// what i did was just to restart angular compiler.

Example 2: drag and drop angular

<div cdkDropList class="example-list" (cdkDropListDropped)="drop($event)">
  <div class="example-box" *ngFor="let movie of movies" cdkDrag>{{movie}}</div>
</div>

Example 3: angular material drag and drop only on button

<div class="example-box" cdkDrag>
  I can only be dragged using the handle

  <div class="example-handle" cdkDragHandle>
    <button class="btn move" cdkDragHandle>
      <mat-icon>open_with</mat-icon>
	</button>
  </div>
</div>