.form-control.is-valid {
    border-color: #28a745;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

.form-control.is-invalid {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

.validation-message {
    font-size: 12px;
    margin-top: 4px;
}

.text-success {
    color: #28a745 !important;
}

.text-danger {
    color: #dc3545 !important;
}

.simple-field.is-valid {
    border-color: #28a745 !important;
}

.simple-field.is-invalid {
    border-color: #dc3545 !important;
}