Use a custom class for the success message
add_filter( ‘frm_main_feedback’, ‘frm_custom_feedback_class’, 20, 3 ); function frm_custom_feedback_class( $message, $form, $entry_id ) { if ( $form->id == 125 ) { //Replace with the ID of your form $message = str_replace(‘frm_message’, ‘my_custom_class’, $message ); } return $message; }Continue reading