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Specify a list of allowed media feature name and value pairs.

@media screen and (min-width: 768px) {}
/** ↑ ↑
* These features and values */

The message secondary option can accept the arguments of this rule.


object: { "unprefixed-media-feature-name": ["array", "of", "values", "/regex/", /regex/]|"value"|"/regex/"|/regex/ }

If a media feature name is found in the object, only its allowed-listed values are allowed. If the media feature name is not included in the object, anything goes.

If a name or value is surrounded with / (e.g. "/width$/"), it is interpreted as a regular expression. For example, /width$/ will match max-width and min-width.


"min-width": ["768px", "1024px"],
"/resolution/": "/dpcm$/"

The following patterns are considered problems:

@media screen and (min-width: 1000px) {}
@media screen and (min-resolution: 2dpi) {}
@media screen and (min-width > 1000px) {}

The following patterns are not considered problems:

@media screen and (min-width: 768px) {}
@media screen and (min-width: 1024px) {}
@media screen and (orientation: portrait) {}
@media screen and (min-resolution: 2dpcm) {}
@media screen and (resolution: 10dpcm) {}
@media screen and (768px < min-width) {}