#block-slider-slider .owl-nav
{
    display: block;
    position:absolute;
    top: 25%;
    width: 100%;
    left: 0;
    font-size: 75px;
}

#block-slider-slider .owl-nav .owl-prev
{
    position: absolute;
    left: 0;
}

#block-slider-slider .owl-nav .owl-next
{
    position: absolute;
    right: 0;
}