.container {  
  margin: 0 auto; 
}

.coating-1 {
  position: relative;
  /*height: 350px;*/
}
.coating-1 .slider .slick-dots {
  display: flex;
  justify-content: center;
  list-style: none;
  padding: 0;
}
.coating-1 .slider .slick-dots li {
  margin-right: 5px;
  padding: 5px;
  background: #000;
  border-radius: 50%;
  cursor: pointer;
}
.coating-1 .slider .slick-dots li:last-child {
  margin: 0;
}
.coating-1 .slider .slides {
  display: flex;
}
.coating-1 .slider .slides img {
  margin: 0 auto;
}
.coating-1 .slider .arrow {
  position: absolute;
  top: 40%;
  z-index: 2;
  cursor: pointer;
  padding: 20px;
  /*background: red;*/
  border-radius: 5px;
}
.coating-1 .slider .arrow i {
  font-size: 32px;
}
.coating-1 .slider .arrow.prev {
  left: -22px;
}
.coating-1 .slider .arrow.next {
  right: -33px;
}