[whatwg] Idea: pseudo-classes :valid and :invalid for whole form?

[Eduard Pascual]

2011/6/14 Rafał Miłecki <zajec5 at gmail.com>:
> We already have required attribute and :valid plus :invalid classes,
> which are nice. However some may want to display additional warning
> when form wasn't filled correctly. Just some single warning, not
> specific field-related. Could you consider adding form element class
> for such a purpose?
>
> Example:
> <p id="err">You've to fill all required fields</p>
> form:invalid #err {
> display: block;
> }
>

This would be more a CSS Selectors concern, and there are already some
ideas at [1] that would address this.

Regards,
Eduard Pascual

[1]: http://wiki.csswg.org/spec/selectors4