.signet {
    height: 51px;
}

@media (max-width: 480px) {
    .signet {
        top: -12px;
        right: 5px;
        width: 30px;
        height: 50px;
    }
    .signet::after {
        bottom: -11px;
    }
    .signet span {
        font-size: 10px;
    }
}