#newsletter-popup .wpcf7-response-output,
#newsletter-popup .wpcf7-not-valid-tip {
  display: none !important;
}
/* hide built-in CF7 messages on homepage only */
.home #homepage-newsletter-message ~ .wpcf7-response-output,
.home .wpcf7-not-valid-tip {
  display: none !important;
}