.banner-wrap {
  position: relative;
  margin: 10px 0;
  display: none;
}
.banner-wrap .banner-control {
  position: absolute;
  top: 50%;
  padding: 10px;
  background-color: #ffffff;
  z-index: 30;
  color: #666666;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}
.banner-wrap .banner-control.prev {
  left: 0;
  transform: translate3d(-10px, -50%, 0);
}
.banner-wrap .banner-control.next {
  transform: translate3d(10px, -50%, 0);
  right: 0;
}
.banner-wrap:hover .banner-control {
  opacity: 1;
  visibility: visible;
}
.banner-wrap:hover .banner-control.prev {
  transform: translate3d(0, -50%, 0);
}
.banner-wrap:hover .banner-control.next {
  transform: translate3d(0, -50%, 0);
}