.carousel-item:nth-child(1) {
  background-image: url("../images/01.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
}
.carousel-item:nth-child(2) {
  background-image: url("../images/02.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
}
.carousel-item:nth-child(3) {
  background-image: url("../images/03.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
} 
.carousel-item:nth-child(4) {
  background-image: url("../images/04.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
}
.carousel-item:nth-child(5) {
  background-image: url("../images/05.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
}
.carousel-item:nth-child(6) {
  background-image: url("../images/06.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center center;
}