How to create a Multi Item carousel using bootstrape 4 .

Here is HTML of carousel 



<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<!------ Include the above in your HEAD tag ---------->




<div class="container-fluid">
    <div id="carouselExample" class="carousel slide" data-ride="carousel" data-interval="9000">
        <div class="carousel-inner row w-100 mx-auto" role="listbox">
            <div class="carousel-item col-md-3  active">
               <div class="panel panel-default">
                  <div class="panel-thumbnail">
                    <a href="#" title="image 1" class="thumb">
                      <img class="img-fluid mx-auto d-block" src="//via.placeholder.com/600x400?text=1" alt="slide 1">
                    </a>
                  </div>
                </div>
            </div>
            <div class="carousel-item col-md-3 ">
               <div class="panel panel-default">
                  <div class="panel-thumbnail">
                    <a href="#" title="image 3" class="thumb">
                     <img class="img-fluid mx-auto d-block" src="//via.placeholder.com/600x400?text=2" alt="slide 2">
                    </a>
                  </div>
                </div>
            </div>
            <div class="carousel-item col-md-3 ">
               <div class="panel panel-default">
                  <div class="panel-thumbnail">
                    <a href="#" title="image 4" class="thumb">
                     <img class="img-fluid mx-auto d-block" src="//via.placeholder.com/600x400?text=3" alt="slide 3">
                    </a>
                  </div>
                </div>
            </div>
            <div class="carousel-item col-md-3 ">
                <div class="panel panel-default">
                  <div class="panel-thumbnail">
                    <a href="#" title="image 5" class="thumb">
                     <img class="img-fluid mx-auto d-block" src="//via.placeholder.com/600x400?text=4" alt="slide 4">
                    </a>
                  </div>
                </div>
            </div>
            <div class="carousel-item col-md-3 ">
              <div class="panel panel-default">
                  <div class="panel-thumbnail">
                    <a href="#" title="image 6" class="thumb">
                      <img class="img-fluid mx-auto d-block" src="//via.placeholder.com/600x400?text=5" alt="slide 5">
                    </a>
                  </div>
                </div>
            </div>
            <div class="carousel-item col-md-3 ">
               <div class="panel panel-default">
                  <div class="panel-thumbnail">
                    <a href="#" title="image 7" class="thumb">
                      <img class="img-fluid mx-auto d-block" src="//via.placeholder.com/600x400?text=6" alt="slide 6">
                    </a>
                  </div>
                </div>
            </div>
            <div class="carousel-item col-md-3 ">
               <div class="panel panel-default">
                  <div class="panel-thumbnail">
                    <a href="#" title="image 8" class="thumb">
                      <img class="img-fluid mx-auto d-block" src="//via.placeholder.com/600x400?text=7" alt="slide 7">
                    </a>
                  </div>
                </div>
            </div>
             <div class="carousel-item col-md-3  ">
                <div class="panel panel-default">
                  <div class="panel-thumbnail">
                    <a href="#" title="image 2" class="thumb">
                     <img class="img-fluid mx-auto d-block" src="//via.placeholder.com/600x400?text=8" alt="slide 8">
                    </a>
                  </div>
                  
                </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 text-faded" 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>
</div>

Here is CSS for carousel 

@media (min-width: 768px) {

    /* show 3 items */
    .carousel-inner .active,
    .carousel-inner .active + .carousel-item,
    .carousel-inner .active + .carousel-item + .carousel-item,
    .carousel-inner .active + .carousel-item + .carousel-item + .carousel-item  {
        display: block;
    }
    
    .carousel-inner .carousel-item.active:not(.carousel-item-right):not(.carousel-item-left),
    .carousel-inner .carousel-item.active:not(.carousel-item-right):not(.carousel-item-left) + .carousel-item,
    .carousel-inner .carousel-item.active:not(.carousel-item-right):not(.carousel-item-left) + .carousel-item + .carousel-item,
    .carousel-inner .carousel-item.active:not(.carousel-item-right):not(.carousel-item-left) + .carousel-item + .carousel-item + .carousel-item {
        transition: none;
    }
    
    .carousel-inner .carousel-item-next,
    .carousel-inner .carousel-item-prev {
      position: relative;
      transform: translate3d(0, 0, 0);
    }
    
    .carousel-inner .active.carousel-item + .carousel-item + .carousel-item + .carousel-item + .carousel-item {
        position: absolute;
        top: 0;
        right: -25%;
        z-index: -1;
        display: block;
        visibility: visible;
    }
    
    /* left or forward direction */
    .active.carousel-item-left + .carousel-item-next.carousel-item-left,
    .carousel-item-next.carousel-item-left + .carousel-item,
    .carousel-item-next.carousel-item-left + .carousel-item + .carousel-item,
    .carousel-item-next.carousel-item-left + .carousel-item + .carousel-item + .carousel-item,
    .carousel-item-next.carousel-item-left + .carousel-item + .carousel-item + .carousel-item + .carousel-item {
        position: relative;
        transform: translate3d(-100%, 0, 0);
        visibility: visible;
    }
    
    /* farthest right hidden item must be abso position for animations */
    .carousel-inner .carousel-item-prev.carousel-item-right {
        position: absolute;
        top: 0;
        left: 0;
        z-index: -1;
        display: block;
        visibility: visible;
    }
    
    /* right or prev direction */
    .active.carousel-item-right + .carousel-item-prev.carousel-item-right,
    .carousel-item-prev.carousel-item-right + .carousel-item,
    .carousel-item-prev.carousel-item-right + .carousel-item + .carousel-item,
    .carousel-item-prev.carousel-item-right + .carousel-item + .carousel-item + .carousel-item,
    .carousel-item-prev.carousel-item-right + .carousel-item + .carousel-item + .carousel-item + .carousel-item {
        position: relative;
        transform: translate3d(100%, 0, 0);
        visibility: visible;
        display: block;
        visibility: visible;
    }

}

 /* Bootstrap Lightbox using Modal */

#profile-grid { overflow: auto; white-space: normal; } 
#profile-grid .profile { padding-bottom: 40px; }
#profile-grid .panel { padding: 0 }
#profile-grid .panel-body { padding: 15px }
#profile-grid .profile-name { font-weight: bold; }
#profile-grid .thumbnail {margin-bottom:6px;}
#profile-grid .panel-thumbnail { overflow: hidden; }
#profile-grid .img-rounded { border-radius: 4px 4px 0 0;}



and this is javascript of carousel 



$('#carouselExample').on('slide.bs.carousel', function (e) {

  
    var $e = $(e.relatedTarget);
    var idx = $e.index();
    var itemsPerSlide = 4;
    var totalItems = $('.carousel-item').length;
    
    if (idx >= totalItems-(itemsPerSlide-1)) {
        var it = itemsPerSlide - (totalItems - idx);
        for (var i=0; i<it; i++) {
            // append slides to end
            if (e.direction=="left") {
                $('.carousel-item').eq(i).appendTo('.carousel-inner');
            }
            else {
                $('.carousel-item').eq(0).appendTo('.carousel-inner');
            }
        }
    }
});


  $('#carouselExample').carousel({ 
                interval: 2000
        });


  $(document).ready(function() {
/* show lightbox when clicking a thumbnail */
    $('a.thumb').click(function(event){
      event.preventDefault();
      var content = $('.modal-body');
      content.empty();
        var title = $(this).attr("title");
        $('.modal-title').html(title);        
        content.html($(this).html());
        $(".modal-profile").modal({show:true});
    });

  });




Original Code Is here . 

https://bootsnipp.com/snippets/dl6ez



Thanks 
Take Care 



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