如何将滑块图像标题显示为bootstrap 4滑块标题

<div id="carouselExample" class="carousel slide" data-ride="carousel">
  <ol class="carousel-indicators">
    <li data-target="#carouselExample" data-slide-to="0" class="active"></li>
    <li data-target="#carouselExample" data-slide-to="1"></li>
    <li data-target="#carouselExample" data-slide-to="2"></li>
  </ol>
  <div class="carousel-inner">
    <div class="carousel-item active">
      <img class="d-block w-100" src="image1.jpg" alt="Slide 1">
      <div class="carousel-caption">
        <h3>Title 1</h3>
      </div>
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="image2.jpg" alt="Slide 2">
      <div class="carousel-caption">
        <h3>Title 2</h3>
      </div>
    </div>
    <div class="carousel-item">
      <img class="d-block w-100" src="image3.jpg" alt="Slide 3">
      <div class="carousel-caption">
        <h3>Title 3</h3>
      </div>
    </div>
  </div>
  <a class="carousel-control-prev" href="#carouselExample" 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="#carouselExample" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>