Angular top popover

import { Component, ViewChild, ElementRef } from '@angular/core';
import Popper from "popper.js";

@Component({
  selector: 'app-root',
  // templateUrl: './app.component.html',
  template: `<div class="flex flex-wrap">
  <div class="w-full text-center">
    <button #btnRef (click)="togglePopover()" class="bg-pink-500 text-white active:bg-pink-600 font-bold uppercase text-sm px-6 py-3 rounded shadow hover:shadow-lg outline-none focus:outline-none mr-1 mb-1" type="button" style="transition:all .15s ease">
top pink
    </button>
  </div>
</div>`,
  styleUrls: ['./app.component.css']
})
export class AppComponent {
  popoverShow = false;
  @ViewChild('btnRef',{ static: false }) btnRef:ElementRef;
  popper = document.createElement("div");
  ngOnInit() {
    this.popper.innerHTML = `<div class="bg-pink-600 border-0 mb-3 block z-50 font-normal leading-normal text-sm max-w-xs text-left no-underline break-words rounded-lg">
  <div>
    <div class="bg-pink-600 text-white opacity-75 font-semibold p-3 mb-0 border-b border-solid border-gray-200 uppercase rounded-t-lg">
      pink popover title
    </div>
    <div class="text-white p-3">
      And here's some amazing content. It's very engaging. Right?
    </div>
  </div>
</div>`;
  }
  togglePopover(){
    if(this.popoverShow){
      this.popoverShow = false;
      this.destroyPopper();
    } else {
      this.popoverShow = true;
      this.createPoppper();
    }
  }
  destroyPopper(){
    this.popper.parentNode.removeChild(this.popper);
  }
  createPoppper(){
    new Popper(this.btnRef.nativeElement, this.popper, {
      placement: "top"
    });
    this.btnRef.nativeElement.parentNode.insertBefore(this.popper, this.btnRef.nativeElement.nextSibling);

  }
}