#wpmem_reg label[for="gift_first_name"] {
    display: block;
    padding-top: 2em;
}

#wpmem_reg input[type="submit"]:disabled {
    opacity: .33;
}

#wpmem_reg input[type="text"].is-invalid {
    border-color: #dc3545;
}

#wpmem_reg input + .error-message {
    margin-top: .25em;
    color: #dc3545;
    font-size: .8em;
}