media-feature-slash-space-before

Require a single space or disallow whitespace before the solidus of a ratio in media features.

@media (aspect-ratio: 16 /9) {}
/**                      ↑
 * The space before this solidus */

The fix option can automatically fix most of the problems reported by this rule.

The solidus this rule reads is the one between the two numbers of a <ratio>, in the colon form of a feature ((aspect-ratio: 16 / 9)) and in the range form ((16 / 9 <= aspect-ratio)) alike. A solidus inside the arguments of a math function is the division operator and is not read, and neither is one inside a url() address, a string or a comment. The solidus of a declaration's value is read by value-slash-space-before.

Where the fix would move code into a // comment, it leaves the whitespace alone and the warning stands.

Options

string: "always"|"never"

"always"

There must always be a single space before the solidus.

The following patterns are considered problems:

@media (aspect-ratio: 16/9) {}

@media (aspect-ratio: 16/ 9) {}

The following patterns are not considered problems:

@media (aspect-ratio: 16 /9) {}

@media (aspect-ratio: 16 / 9) {}

"never"

There must never be whitespace before the solidus.

The following patterns are considered problems:

@media (aspect-ratio: 16 /9) {}

@media (aspect-ratio: 16 / 9) {}

The following patterns are not considered problems:

@media (aspect-ratio: 16/9) {}

@media (aspect-ratio: 16/ 9) {}