Re: CSS3 Validation Service

On 11 May 2016, at 5:43, Suriya N wrote:

>  I have been trying to check the conformity of some CSS3 stylesheets
>  and I believe the W3C CSS validator must be a little out of date since
>  using valid mark-up for the CSS3 animation property returns "Property
>  animation doesn't exist" even though it is implemented in Firefox 5+,
> Chrome, Safari and Opera with -moz-, -webkit-, -webkit- and -o-
>  prefixed respectively.
>
>  Similarly, using valid markup for the @keyframes property returns
>  "Sorry, the at-rule @keyframes is not implemented." even though it is
>  implemented in Firefox 4+, Chrome, Safari and Opera with -moz-,
> -webkit-, -webkit- and -o- prefixed respectively.

Given valid CSS using `animation` and `@keyframes`, my [test case][1] is marked a valid by the CSS validation service.

It sounds like you expect experimental, prefixed, vendor specific implementations to be valid CSS. They are not.


[1]: http://test-cases.dorward.me.uk/validator/animation/


-- 
David Dorward
http://dorward.co.uk/