How to remove and replace form validation errors in cf7?

Question

css

It is necessary to remove the pop-up fields "the field is required" and "The form contains errors."
You just need to remove the yellow and red fields, and instead highlight the problematic field (phone number) with red.

Answer 1

for example via css
like this

.wpcf7-not-valid-tip,
.wpcf7-validation-errors, 
.wpcf7-acceptance-missing {
  display: none !important;
}
.wpcf7-not-valid {
  border:  2px solid red !important;
}