.news_slider{
    position: relative;
}
.news_slider.owl-carousel .owl-prev {
    top: 50%;
    margin-top: -10px;
    left: -30px;
    width: 12px;
    height: 20px;
}
.news_slider.owl-carousel .owl-next {
    top: 50%;
    margin-top: -10px;
    right: -30px;
    width: 12px;
    height: 20px;
}