[css-syntax][css-variables] parsing a declaration should allow white space only values

CSS Variables allows custom properties to have a value that consists 
only of a white space token, such as |var-a: ;|.  The "parse a 
declaration" algorithm in 
http://dev.w3.org/csswg/css-syntax/#parse-a-declaration doesn't, however.

Received on Monday, 9 December 2013 03:58:46 UTC