.owl-nav div {
    top: 40%;
    position:absolute;
    }
    .owl-prev {
    left: -25px;
    height: 25px;
    width: 25px;
    background-color: #000;
    color:#fff;
    border-radius: 50%;
    display: inline-block;
    }
    .owl-next  {
    right: -25px;
    height: 25px;
    width: 25px;
    background-color: #000;
    color:#fff;
    border-radius: 50%;
    display: inline-block;
    }