.owl-next img,
.owl-prev img
{
    width: 20px;
    height: 20px;
}
.owl-nav button.owl-next
{
    border:1px solid #000 !important;
    width: 40px;
    height: 40px;
    border-radius: 50% !important;
    background: #000 !important;
    right: -20px;
    position: absolute;
    top: 39%;
}
.owl-nav button.owl-prev
{
    border:1px solid #000 !important;
    width: 40px;
    height: 40px;
    border-radius: 50% !important;
    background: #000 !important;
    position: absolute;
    top: 39%;
    left: -20px;
}
.owl-nav button.owl-next:hover
{
    background: #000 !important;
}
.owl-nav button.owl-prev:hover
{
    background: #000 !important;
}
.owl-nav button.owl-next img
{
     filter:  brightness(0) invert(1);
}
.owl-nav button.owl-prev img
{
     filter:  brightness(0) invert(1);
}