const anotTitle = document.createElement ('template');
anotTitle.innerHTML = `
<style>
    h3 {
      margin: 0;
      text-align:center;
    }
  </style>
<h3><slot></slot></h3>`;

class AnotTitle extends AnotElement {
  constructor() {
    super();
    this.shadowRoot.appendChild(anotTitle.content.cloneNode(true));
  }
}