div.wpcf7-response-output,
div.wpcf7-validation-errors {
    display: none !important;
}

/*span.wpcf7-not-valid-tip {
    display: none;
}*/

input[aria-invalid="true"],
select[aria-invalid="true"], 
textarea[aria-invalid="true"] {
    border-color: #ff2c00!important; 
}