.picture-thumbs .slick-prev {
    right: 0;
    left: auto;
    background: #fff url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAPBAMAAAArJJMAAAAAJ1BMVEUAAACIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIgln7UqAAAADHRSTlMADwO+1MqypZeHGQhTMaPlAAAAMElEQVQI12OYwAAEJxSAxJkiEHFsA5A4YwgijgoAiTNeIOIwmAUTM4SpK4LqBZsCAAB3GuAPz1QGAAAAAElFTkSuQmCC')
                         no-repeat center;
}
.picture-thumbs .slick-next {
    right: auto;
    left: 0;
    background: #fff url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAPBAMAAAArJJMAAAAAJ1BMVEUAAACIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIiIgln7UqAAAADHRSTlMADwO+1MqypZeHGQhTMaPlAAAAM0lEQVQI12MAAk4gZuoBEupnGBi4c4CE8JkzDIwxQGLJGSBhcwbMgoiBZSHqwDpgehk4ARngFYuOQJpHAAAAAElFTkSuQmCC')
                         no-repeat center;
}