.carousel img {
  width: 70px;
  max-height: 70px;
  border-radius: 50%;
  margin-right: 1rem;
  overflow: hidden;
}
.carousel-inner {
  padding: 1em;
}

.carousel .card {
  margin: 0 0.5em;
  border: 0;
} 

.carousel-control-prev,
.carousel-control-next {
  width: 3rem;
  height: 3rem;
  background-color: grey;
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
}