.swiper-button-prev,
.swiper-button-next {
  color: #fff;
  /* arrow color */
  background-color: hsla(220, 33%, 36%, 0.75);
  /* button background */
  border-radius: 50%;
  padding: 10px;
  width: 20px;
  height: 20px;
  box-shadow: var(--shadow-elevation-high);
}

.swiper img {
  box-shadow: none;
}