<div id="carouselExampleIndicators" class="carousel slide container" data-ride="carousel">
  <ol class="carousel-indicators">
    <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li>
    <li data-target="#carouselExampleIndicators" data-slide-to="1"></li>
    <li data-target="#carouselExampleIndicators" data-slide-to="2"></li>
  </ol>
  <div class="carousel-inner">
    <div class="carousel-item active row">
      <div class="row">
        <div class="col-6 col-md-4">
      <div class="card">
        <div class="card-body">
          <h1>1 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
        <div class="col-6 col-md-4">
      <div class="card">
        <div class="card-body">
          <h1>1 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
        <div class="col-md-4 d-md-block d-none">
      <div class="card">
        <div class="card-body">
          <h1>1 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
      </div>
    </div>
    <div class="carousel-item">
      <div class="row">
        <div class="col-6 col-md-4">
      <div class="card">
        <div class="card-body">
          <h1>2 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
        <div class="col-6 col-md-4">
      <div class="card">
        <div class="card-body">
          <h1>2 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
        <div class="col-md-4 d-md-block d-none">
      <div class="card">
        <div class="card-body">
          <h1>2 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
      </div>
    </div>
    <div class="carousel-item">
      <div class="row">
        <div class="col-6 col-md-4">
      <div class="card">
        <div class="card-body">
          <h1>3 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
        <div class="col-6 col-md-4">
      <div class="card">
        <div class="card-body">
          <h1>3 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
        <div class="col-md-4 d-md-block d-none">
      <div class="card">
        <div class="card-body">
          <h1>3 of 3</h1>
          <div class="card-text">
            Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam ornare pharetra elit vitae mollis. Mauris consectetur semper diam ac pretium.
          </div>
        </div>
      </div>
        </div>
      </div>
    </div>
  </div>
  <a class="carousel-control-prev" href="#carouselExampleIndicators" 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="#carouselExampleIndicators" role="button" data-slide="next">
    <span class="carousel-control-next-icon" aria-hidden="true"></span>
    <span class="sr-only">Next</span>
  </a>
</div>