Specify a pattern for custom media query names.
@custom-media --foo (max-width: 30em);
/** ↑
* The pattern of this */The message secondary option can accept the arguments of this rule.
regex|string
A string will be translated into a RegExp like so new RegExp(yourString) — so be sure to escape properly.
Given the string:
"foo-.+"The following patterns are considered problems:
@custom-media --bar (min-width: 30em);The following patterns are not considered problems:
@custom-media --foo-bar (min-width: 30em);