# media-feature-colon-space-before Require a single space or disallow whitespace before the colon in media features. ```css @media (max-width :600px) {} /** ↑ * The space before this colon */ ``` ## Options `string`: `"always"|"never"` ### `"always"` There *must always* be a single space before the colon. The following patterns are considered warnings: ```css @media (max-width:600px) {} ``` ```css @media (max-width: 600px) {} ``` The following patterns are *not* considered warnings: ```css @media (max-width :600px) {} ``` ```css @media (max-width : 600px) {} ``` ### `"never"` There *must never* be whitespace before the colon. The following patterns are considered warnings: ```css @media (max-width :600px) {} ``` ```css @media (max-width : 600px) {} ``` The following patterns are *not* considered warnings: ```css @media (max-width:600px) {} ``` ```css @media (max-width: 600px) {} ```