Upright text orientation not supported

[r12a]

This issue is applicable to Chinese, Japanese, Korean, and Mongolian.

The CSS text-orientation property is only supported as standard by Gecko and Blink browsers.

Fixed !

This gap is now fixed. For details, see this GitHub issue.

[r12a]

The first comment in this issue contains text that will automatically appear in one or more gap-analysis documents as a subsection with the same title as this issue. Any edits made to that comment will be immediately available in the Editor's draft of the document.

Please add any discussion to the GitHub issue being used to track this gap, and not to this issue