@media (min-width: 990px) {
    .authcolor {
        background: #7c081a;
    }
    #authbutton {
        background: #d3c89c;
        color: darkred;
    }
}
@media (max-width: 989px) {
    #authbutton {
        background: #3f3f3f;
        color: #fff;
    }
    .authbutton {
        background: #3f3f3f;
        color: #fff;
    }
}