.wpcf7 form.invalid .wpcf7-response-output, .wpcf7 form.unaccepted .wpcf7-response-output, .wpcf7 form.payment-required .wpcf7-response-output {
    color: red;
}
button#submit\ contact_form:after {
    content: "" !important;
    padding: 0 !important;
}