@media (max-width: 600px) {
  .arrow {
    display: none !important;
  }
  .arrow-img {
    display: none !important;
  }
}
.arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  padding: 0.5em;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s;
  background: none;
}
.arrow-left {
  left: 0;
  margin-left: 1em;
}
.arrow-right {
  right: 0;
  margin-right: 1em;
}
.arrow-img {
  width: 48px;
  height: auto;
  max-width: 100%;
  max-height: 100px;
  display: block;
}