ng-option-tmp custom

[elvispdosreis]

I need to set up a dropdown in the style of a vertical timeline, but I need <div class="timeline"> to be displayed only once, but within ng-option-tmp it is repeated several times

<ng-template ng-option-tmp let-item="item" let-index="index" class="timeline mb-0">


<div class="timeline">

   <div class="timeline-item ">
      <span class="timeline-point timeline-point-secondary">{{index}}</span>
      <div class="timeline-event">
         {{item.name}}
      </div>
   </div>

</div>

</ng-template>