Error using :after

Suddenly the W3C CSS validator is complaining about a statement that I 
do not believe it has complained about before.

    .pageno:after { color: silver; content: attr(title); }

Error message:
18  .pageno:after  Value Error : content 
Parse Error attr(title)

I'm validating as CSS 2.1. Is that statement really invalid for some 
reason I don't understand, or has a recent change to the validator 
introduced this behavior in error?


Received on Wednesday, 24 June 2015 12:16:33 UTC