.ob-slider-single .slick-prev, .ob-slider-single .slick-next {
    background-image: url(../image/arrow.svg);
    background-size: contain;
    width: 40px;
    height: 40px;
    background-repeat: no-repeat;
    background-position: center;
}
.ob-slider-single .slick-prev {
    rotate: 90deg;
    left: -65px;
}
.ob-slider-single .slick-next {
    rotate: 270deg;
    right: -65px;
}
.ob-slider-single .slick-next:before, .ob-slider-single .slick-prev:before{
	display: none;
}