.sfdb-email-domain-checker-message {
    display: none;
    margin: 8px 0 12px;
    padding: 8px 10px;
    border-radius: 8px;
    font-size: 13px;
    line-height: 1.6;
}

.sfdb-email-domain-checker-message.is-checking {
    display: block;
    color: #555;
    background: #f3f3f3;
}

.sfdb-email-domain-checker-message.is-blocked,
.sfdb-email-domain-checker-message.is-invalid {
    display: block;
    color: #b00020;
    background: #ffe0d6;
}

.sfdb-email-domain-checker-message.is-warning {
    display: block;
    color: #7a4b00;
    background: #fff1c2;
}