@charset "utf-8";
/* CSS Document */
 VIDEO
  <div class="embed-responsive embed-responsive-16by9">
    <iframe class="embed-responsive-item"></iframe>
  </div>
.carousel {
  /* any dimensions are fine, it can be responsive with max-width */
  width: 300px;
  height: 350px;
}

.carousel-inner {
  /* make sure your .items will get correct height */
  height: 100%;
}
 img {
   height:80vh;
   object-fit:contain
}