.slider {
    box-sizing: border-box;
    width: 100%;
    margin: 0 auto;
}
.slick-slide {
  box-sizing: border-box;
  margin: 0;
}

.slick-slide img {     
  width: 100%;
  display: block;  
}

.slick-prev:before,
.slick-next:before {
  color: black;
}
.slick-slide {
  transition: all ease-in-out .3s;
  opacity: .2;
}

.slick-active {
  opacity: 1;
}

.slick-current {
  opacity: 1;
}