.project::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.5);
  z-index: 0;
}

.z-index-1 {
  position: relative;
  z-index: 1;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
  background-size: 60%;
}