SASS target languages mixin

mixin-lang.scss

// select by language, send it one or more comma separated quote-delimited locale codes
// assuming lang attribute is set on the html tag, like it should be!
// usage: @include if-lang("de") {}
// usage: @include if-lang("de", "en", "cn-ZH") {}

@mixin if-lang($locales...) {
	@for $i from 1 through length($locales) {
		html[lang=#{nth($locales, $i)}] & {
			@content;
		}

	}
}