3 Disallow (unescaped) newlines in strings.
14 [The spec](https://www.w3.org/TR/CSS2/syndata.html#strings) says this: "A string cannot directly contain a newline. To include a newline in a string, use an escape representing the line feed character in ISO-10646 (U+000A), such as \"\A\" or \"\00000a\"." And also: "It is possible to break strings over several lines, for aesthetic or other reasons, but in such a case the newline itself has to be escaped with a backslash (\)."
20 The following patterns are considered violations:
31 is probably wrong"] {}
42 The following patterns are *not* considered violations:
46 content: "first\Asecond";
52 content: "first\\nsecond";
63 font-family: "Times New Roman";