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“If you just sit and observe, you will see how restless your mind is. If you try to calm it, it only makes it worse, but over time it does calm, and when it does, there’s room to hear more subtle things. You see so much more than you could see before. It’s a discipline; you have to practice it.”
Steve Jobs

:user-valid (:-moz-ui-valid)

The :user-valid CSS pseudo-class represents any validated form element whose value validates correctly based on its validation constraints. However, unlike :valid it only matches once the user has interacted with it.
:user-valid css reference