Re: [css3-animation] keyframes and percentages

On Tue, Oct 9, 2012 at 8:44 PM, Øyvind Stenhaug <oyvinds@opera.com> wrote:

> On Tue, 09 Oct 2012 13:28:35 +0200, Yves Lafon <ylafon@w3.org> wrote:
>
>  Hi,
>> The spec is a bit silent about that, but is it ok to have negative
>> percentages or percentages over 100%?
>>
>
> The editor's draft says that "[i]f a keyframe selector specifies negative
> percentage values or values higher than 100%, then the keyframe will be
> ignored."
>
>
>  It is not specified at all, so it should be allowed, and if you have
>> -20% {
>>    top: 10px;
>>    animation-timing-function: ease-out;
>> }
>>
>
> Even with the working draft, this is not valid per the keyframes_blocks
> grammar.


keep in mind that

-20%, 20% { top: 10px; animation-timing-function: ease-out; }

should not ignore the 20% keyframe, but ignore the -20% keyframe

also, note the CSS2.1 Errata s.4.3.1 [1]

[1] http://www.w3.org/Style/css2-updates/REC-CSS2-20110607-errata.html