lilaL

<section>
<div style="position:relative" >
  <p class="fragment fade-in" style="position:absolute; margin-left: auto; margin-right: auto; left: 0; right: 0;" data-fragment-index="0">
    TWO
  </p>
  <p class="fragment fade-out" style="position:absolute; margin-left: auto; margin-right: auto; left: 0; right: 0;" data-fragment-index="0">
    ONE
  </p>
</div>
</section>