Do you want to be right or happy? You can’t be both.

Suggests that in many situations - especially in relationships or arguments - insisting on being right can come at the cost of harmony or peace of mind. It implies that prioritizing your ego or the need to win an argument may damage relationships or personal contentment, whereas letting go of that need (even if you’re technically right) may lead to greater happiness.

Gerald Jampolsky

:invalid

The :invalid CSS pseudo-class represents any <input> or other <form> element whose contents fail to validate.
:invalid css reference