# custom-media-pattern Specify a pattern for custom media query names. ```css @custom-media --foo (max-width: 30em); /** ↑ * The pattern of this */ ``` ## Options `regex|string` A string will be translated into a RegExp like so `new RegExp(yourString)` — so be sure to escape properly. Given the string: ```js "foo-.+" ``` The following patterns are considered warnings: ```css @custom-media --bar (min-width: 30em); ``` The following patterns are *not* considered warnings: ```css @custom-media --foo-bar (min-width: 30em); ```