mempool/frontend/src/app/components/start/start.component.html

<ng-container *ngIf="specialEvent">
  <div class="pyro">
    <div class="before"></div>
    <div class="after"></div>
  </div>
  <div class="warning-label">{{ eventName }}</div>
</ng-container>

<div *ngIf="countdown > 0" class="warning-label">{{ eventName }} in {{ countdown | number }} block{{ countdown === 1 ? '' : 's' }}!</div>

<div id="blockchain-container" dir="ltr" #blockchainContainer
  (mousedown)="onMouseDown($event)"
  (dragstart)="onDragStart($event)"
>
<app-blockchain></app-blockchain>
</div>

<router-outlet></router-outlet>