html5 - how do I use the :valid and :invalid selectors for css? -


i’m new coding , heard friend it’s possible use :valid , :invalid selectors inside css form. how do this?

actually interesting question. believe it's 1 of things that's brand new css3. not sure whether can apply it. don't think can @ moment, because tried on fiddle , wasn't working me. it's going introduced update of css selectors.

the way use this:

html:

email: <input type="email" required>

css:

input[type=email]:invalid {   outline: red solid 3px; }   input[type=email]:valid {   outline: lightgreen solid 3px; }

with above css, email field styled red outline before user enters anything. once user types in valid email address, outline turn green.

hopes helps!


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