.services-section{position:relative;}
.swiper-btn-prev,
.swiper-btn-next{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  z-index:10;
  width:40px;height:40px;
  background:rgba(0,0,0,.5);
  color:#fff;
  border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  cursor:pointer;
}
.swiper-btn-prev{left:-35px;}
.swiper-btn-next{right:-35px;}