PhpStorm 4 shows error in css classe names with utf-8 characters.
According to w3c spec http://www.w3.org/TR/CSS21/syndata.html#characters
In CSS, identifiers (including element names, classes, and IDs in selectors) can contain only the characters [a-z0-9] and ISO 10646 characters U+00A1 and higher, plus the hyphen (-) and the underscore (_); they cannot start with a digit, or a hyphen followed by a digit.
so this should be valid.
Do i miss something, or it's bug?