button.slick-prev {width: 135px; height: 356px; background: url("../img/prev_arrow.png") no-repeat;border: 0px;position:absolute;z-index: 1000;top:15%;}
button.slick-next {width: 135px; height: 356px; background: url("../img/next_arrow.png") no-repeat;border: 0px;position:absolute;z-index: 1000;top:15%;right:0px;}