[ttml2] Mismatch between CSS and TTML2 text align styling

palemieux has just created a new issue for 
https://github.com/w3c/ttml2:

== Mismatch between CSS and TTML2 text align styling ==
TTML2 WD specifies _if a tts:textAlign attribute is specified on a 
span element, then that span element must be processed using inline 
block display semantics for the purpose of presentation processing_.

CSS however appears to apply inline block semantics (if specified 
using `display: inline-block`) only to lines that have been explicitly
 broken using `br`. See https://codepen.io/palemieux/pen/bgoLzb.

Do the CSS semantics apply here?

If so, this is an issue since this means 
http://www.w3.org/ns/ttml/profile/imsc1/extension/#multiRowAlign is 
not supported.

If not, this is an issue since there is no correspondence between CSS 
and TTML2. This should be brought to the attention of CSS WG, assuming
 this is a feature essential to the industry. In any case, a note 
should be added in TTML2. 

Please view or discuss this issue at 
https://github.com/w3c/ttml2/issues/238 using your GitHub account

Received on Thursday, 26 January 2017 17:51:47 UTC