.slider-hero1 {
  position: relative;
}

.work .img {
 width: 100%;
  height: 300px;
  object-fit: contain;
  position: relative;
  z-index: 0;

  -webkit-box-shadow: 0px 20px 35px -30px rgba(0, 0, 0, 0.26);
  -moz-box-shadow: 0px 20px 35px -30px rgba(0, 0, 0, 0.26);
  box-shadow: 0px 20px 35px -30px rgba(0, 0, 0, 0.26);
  background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
}
.work .img:after {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  content: "";
  z-index: -1;
  background: #000;
  opacity: 0.3;
}

.my-5 {
  margin-top: 3rem !important; }


.thumbnail {
  list-style: none;   
  padding: 0;
  margin: 0;
  position: absolute;
  bottom: 0px;
  left: 50%;
  -webkit-transform: translateY(50%) translateX(-50%);
  -ms-transform: translateY(50%) translateX(-50%);
  transform: translateY(50%) translateX(-50%);
  z-index: 9;
  width: 100%;
}
.thumbnail li {
  display: inline-block;
}
.thumbnail li a {
  display: block;
  margin: 4px;
}
.thumbnail li a img {
  width: 30px;
  height: 30px;
  border-radius: 10%;
  -webkit-transform: scale(0.8);
  -ms-transform: scale(0.8);
  transform: scale(0.8);
  -webkit-transition: 0.3s all ease;
  -o-transition: 0.3s all ease;
  transition: 0.3s all ease;
  -webkit-box-shadow: 0 5px 10px 0 rgba(0, 0, 0, 0.2);
  box-shadow: 0 5px 10px 0 rgba(0, 0, 0, 0.2);
      vertical-align: middle;


}
.thumbnail li.active a img {
  border: 2px solid #fff;
  -webkit-transform: scale(1.1);
  -ms-transform: scale(1.1);
  transform: scale(1.1);
  -webkit-box-shadow: 0 10px 20px 0 rgba(0, 0, 0, 0.2);
  box-shadow: 0 10px 20px 0 rgba(0, 0, 0, 0.2);
}
@media (max-width: 767.98px) {
  .thumbnail li a img {
    width: 50px;
  }
}