Re: Selecting xml: attributes using CSS attr()

> Have you seen that work?
> It’s not working for me in IE-Edge or in Chrome.

See http://paramedic.wwp.neu.edu/~syd/temp/TEI/tiny_test.xml, which
works for me in Firefox 51.0.1 for Ubuntu, but not in Chromium
55.0.2883.87. (Chromium wants to see "id", not "xml|id".)

If you remember which engines various browsers use (I don't), it may
be helpful to look through
https://en.wikipedia.org/wiki/Comparison_of_layout_engines_(Cascading_Style_Sheets)
for "namespace" and "|".