Re: CSS3 Validation Service

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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  and I believe the W3C CSS validator must be a little out of date since=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 impleme=
ntations to be valid CSS. They are not.


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


-- =

David Dorward
http://dorward.co.uk/
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<div class=3D"markdown">
<p dir=3D"auto">On 11 May 2016, at 5:43, Suriya N wrote:</p>

<blockquote>
<p dir=3D"auto">I have been trying to check the conformity of some CSS3 s=
tylesheets<br>
 and I believe the W3C CSS validator must be a little out of date since<b=
r>
 using valid mark-up for the CSS3 animation property returns "Property<br=
>
 animation doesn't exist" even though it is implemented in Firefox 5+,<br=
>
Chrome, Safari and Opera with -moz-, -webkit-, -webkit- and -o-<br>
 prefixed respectively.</p>

<p dir=3D"auto">Similarly, using valid markup for the @keyframes property=
 returns<br>
 "Sorry, the at-rule @keyframes is not implemented." even though it is<br=
>
 implemented in Firefox 4+, Chrome, Safari and Opera with -moz-,<br>
-webkit-, -webkit- and -o- prefixed respectively.</p>
</blockquote>

<p dir=3D"auto">Given valid CSS using <code>animation</code> and <code>@k=
eyframes</code>, my <a href=3D"http://test-cases.dorward.me.uk/validator/=
animation/">test case</a> is marked a valid by the CSS validation service=
=2E</p>

<p dir=3D"auto">It sounds like you expect experimental, prefixed, vendor =
specific implementations to be valid CSS. They are not. </p>

<p dir=3D"auto">-- <br>
David Dorward<br>
<a href=3D"http://dorward.co.uk/">http://dorward.co.uk/</a></p>

</div>
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