25956 2014-06-03 09:44:12 +0000 [WebVTT] Add 'center' alignment 2015-11-05 15:08:54 +0000 1 1 1 Unclassified TextTracks CG WebVTT unspecified PC All RESOLVED MOVED v2 P2 normal --- 1 philipj zcorpan eric.carlson philipj rick.eyre silviapfeiffer1 zcorpan public-texttracks oldest_to_newest 107187 0 philipj 2014-06-03 09:44:12 +0000 http://dev.w3.org/html5/webvtt/#applying-css-properties-to-webvtt-node-objects In the table in this section, we can see that align:middle is the only value which does not match the CSS setting. To align better with CSS, call it 'center'. We could keep 'middle' as an alias, or remove it if compat allows. (Since it is the default value the compat risk ought to be lower.) 124097 1 zcorpan 2015-11-05 14:55:27 +0000 Are implementors OK with just renaming middle to center? Compat-wise, any content that specifies align:middle will still be centered since it's the default. The only case where it makes a difference is if you were to use duplicate settings, I think. 124098 2 zcorpan 2015-11-05 15:02:22 +0000 This would also affect positionAlign, and the DOM API (which I think would start throwing for cue.align = 'middle' in JS strict mode). 124099 3 zcorpan 2015-11-05 15:08:54 +0000 https://github.com/w3c/webvtt/pull/244