.carousel-indicators {
  background: #888;
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
  height: 85px;
  width: 100px;
  outline: black;
  background-size: 100%, 100%;
  border-radius: 50%;
  /*border: 1px solid black;*/
  background-image: none;
}

.carousel-control-next-icon:after {
  content: '>';
  font-size: 55px;
  color: red;
}

.carousel-control-prev-icon:after {
  content: '<';
  font-size: 55px;
  color: red;
}