Elements with dir attribute will have unicode-bidi:isolate

Published: | Categories: CSS HTML


The HTML5 spec has changed the semantics of the dir attribute to use unicode-bidi:isolate-override instead of unicode-bidi:bidi-override on the <bdo> element and unicode-bidi:isolate instead of unicode-bidi:embed on all other elements.

The user agent stylesheet of Firefox has been updated to follow the spec, but unicode-bidi:bidi-override is still used on <bdo>. This inconsistency will be solved soon. Other elements will have unicode-bidi:-moz-isolate on Firefox 47 and later.

Update: Firefox 50 and later will use unicode-bidi:isolate-override for the <bdo> element.