JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css">
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<div id="carouselExampleControls" class="carousel slide" data-ride="carousel">
  <div class="carousel-inner">
    <div class="carousel-item">
      <img class="d-block w-100" src="https://placeimg.com/640/480/any" alt="First slide">
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="https://placeimg.com/640/480/nature" alt="Second slide">
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="https://placeimg.com/640/480/animals" alt="Third slide">
    </div>
  </div>
  <a class="carousel-control-prev" href="#carouselExampleControls" role="button" data-slide="prev">
    <span class="carousel-control-prev-icon" aria-hidden="true"></span>
    <span class="sr-only">Previous</span>
  </a>
  <a class="carousel-control-next" href="#carouselExampleControls" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>

CSS

.carousel-item img{
  transition: all 1s;
  transform:scale(1);
}

.carousel-item.active img{
  transform:scale(1.2);
}

JavaScript

window.setTimeout(function(){
                $('#carouselExampleControls .carousel-item:first-child').addClass('active');
            },2000);