double_quotes vs single_quotes

[NameFILIP]

Why are you guys using double_quotes instead of single_quotes as in the javascript config?

P.S. Looks like the official sass documentation uses single quotes: http://sass-lang.com/guide#topic-5

[ljharb]

Double quotes are more common and idiomatic in both CSS and HTML, single quotes are more common and idiomatic in JS. This is the same reason that JSX has double quotes, despite JS having single quotes: the similarity to HTML implies using similar quote styles. CSS → SASS is no different.

[ilan-schemoul]

You may want to put it in the guidelines. Because the fact is both css and a kind of programming language (very good description isn't it) may makes unclear how we should do about quotes.
Besides the css guideline is very short and it's such a pleasure to have to read through a ton of guidelines...