.login #wfls-prompt-overlay {
    background-color: #2c2b30;
    z-index: 100;
}

.login #wfls-prompt-overlay:after {
    content: "2FA Code";
    position: absolute;
    top: 10px;
    font-size: 2.2rem;
    text-align: center;
    width: 90%;
    margin: 0 auto;
}