@media (min-width: 480px) {
    .arrow-left .tn-atom, 
    .arrow-right .tn-atom {
        transition: all .3s ease-in-out;
    }
    .arrow-left .tn-atom:hover, 
    .arrow-right .tn-atom:hover {
        background-color: #fff !important;
    }
}