#signin.col-md-6 {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,.1);
}

@media (min-width: 992px) {
    #signin.col-md-6 {
        border-right: 1px solid rgba(255,255,255,.1);
        border-bottom: none;
    }
}

.white-hover:hover {
    color: rgba(255,255,255,1);
}