- at-rule-empty-line-before
- block-closing-brace-space-after
- block-closing-brace-space-before
- block-opening-brace-newline-after
- block-opening-brace-newline-before
- block-opening-brace-space-after
- block-opening-brace-space-before
- color-hex-case
- color-named
- declaration-block-semicolon-newline-after
- declaration-block-single-line-max-declarations
- declaration-block-trailing-semicolon
- declaration-colon-space-after
- declaration-no-important
- declaration-property-value-blacklist
- function-parentheses-space-inside
- indentation
- length-zero-no-unit
- media-feature-parentheses-space-inside
- no-descending-specificity
- rule-empty-line-before
- selector-attribute-brackets-space-inside
- selector-attribute-quotes
- selector-list-comma-newline-after
- selector-max-id
- selector-pseudo-class-parentheses-space-inside
- selector-type-no-unknown
- string-quotes
See output of grunt lint for details about location of those errors.