.carousel-item { padding-top: 76px;  }

#black-overlay { opacity: 1;  background: black; height: 100%; width: 100%; position: absolute; top: 0; left: 0; z-index: 9999999; transition: all 0.4s ease; }
#black-overlay.hidden { opacity: 0; z-index: -1; }

.carousel-control-prev { opacity: 1; }
.carousel-control-next { opacity: 1; }
.carousel-control-prev .carousel-control-prev-icon { padding: 18px;  }
.carousel-control-next .carousel-control-next-icon { padding: 18px; }

.loader {
  border: 16px solid #f3f3f3;
  border-radius: 50%;
  border-top: 16px solid #3498db;
  width: 100px;
  height: 100px;
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear infinite;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}