.promo-box {
    border: 3px solid #ffaa00;
    color: #000;
    padding: 16px;
    margin-bottom: 32px;
    text-align: center;
}
.promo-box a, .promo-box a:hover {
    color: #000 !important;
}

@media (prefers-color-scheme: dark) {
    .promo-box {
        color: #fff;
    }
    .promo-box a, .promo-box a:hover {
        color: #fff !important;
}
}