#sync1 .owl-item a{
    display: flex;
    background: #fff;
    align-items: center;
    justify-content: center;
    height: 768px;
}
#sync1 .owl-item img{
    height:auto;
    width: auto;
    max-width: 100%;
    max-height: 768px;
}
@media all and (max-width:768px){
    #sync1{
        border:1px solid #e1e1e1;
    }
    #sync1 .owl-item a{
        height:250px;
    }
    #sync1 .owl-item img{
        max-height: 250px;
    }
}