Trying to get a Bootstrap Carousal to show 4 items fixed

.scene {
  border: 1px solid #CCC;
  margin: 40px 0;
  position: relative;
  width: 210px;
  height: 140px;
  margin: 40px auto;
  perspective: 1000px;
}

.carousel {
  width: 100%;
  height: 100%;
  position: absolute;
  transform: translateZ(-288px);
  transform-style: preserve-3d;
  transition: transform 1s;
}

.carousel__cell {
  position: absolute;
  width: 190px;
  height: 120px;
  left: 10px;
  top: 10px;
  border: 2px solid black;
  line-height: 116px;
  font-size: 80px;
  font-weight: bold;
  color: white;
  text-align: center;
}

.carousel__cell:nth-child(9n+1) { background: hsla(  0, 100%, 50%, 0.8); }
.carousel__cell:nth-child(9n+2) { background: hsla( 40, 100%, 50%, 0.8); }
.carousel__cell:nth-child(9n+3) { background: hsla( 80, 100%, 50%, 0.8); }
.carousel__cell:nth-child(9n+4) { background: hsla(120, 100%, 50%, 0.8); }

.carousel__cell:nth-child(1) { transform: rotateY(  0deg) translateZ(128px); }
.carousel__cell:nth-child(2) { transform: rotateY( 90deg) translateZ(128px); }
.carousel__cell:nth-child(3) { transform: rotateY( 180deg) translateZ(128px); }
.carousel__cell:nth-child(4) { transform: rotateY(270deg) translateZ(128px); }



var cellCount = 4;