Disallow missing punctuation for non-boolean media features.

禁止非布尔类型的 media 特性缺少标点。

@media (max-width: 600px) {}
/**              ↑
 * This punctuation */

This rule ensures that there is either a colon or a range operator in non-boolean media features.

该规则确保在非布尔类型的 media 特性中有一个冒号或范围操作符。



The following patterns are considered warnings:


@media (max-width 600px) {}
@media (width   20em) {}

The following patterns are not considered warnings:


@media (max-width: 600px) {}
@media (width  >=  20em) {}