.slider {
        width: 230px;
        margin:0 auto;
    }

    .slick-slide {
      margin: 0px;
    }

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

    .slick-prev:before,
    .slick-next:before {
        color: black;
    }
	
@media(max-width:520px) {
.slider {
width: 150px;
margin:0 auto;
}
}