.slick-next {
    width: 30px;
    height: 40px;
  }

.slick-prev {
    width: 30px;
    height: 40px;
  }

.slick-next:before {
    font-family: slick;
    font-size: 30px;
    line-height: 1;
    opacity: 1;
    color: gray;
    -webkit-font-smoothing: antialiased;
}

.slick-prev:before {
    font-family: slick;
    font-size: 30px;
    line-height: 1;
    opacity: 1;
    width: 30px;
    height: 40px;
    color: gray;
    -webkit-font-smoothing: antialiased;
}