.csslintrc

{
    "important"                   :     2,
    "adjoining-classes"           :     2,
    "known-properties"            :     2,
    "box-sizing"                  :     2,
    "box-model"                   :     2,
    "overqualified-elements"      :     2,
    "display-property-grouping"   :     2,
    "bulletproof-font-face"       :     2,
    "compatible-vendor-prefixes"  :     2,
    "regex-selectors"             :     2,
    "errors"                      :     2,
    "duplicate-background-images" :     2,
    "duplicate-properties"        :     2,
    "empty-rules"                 :     2,
    "selector-max-approaching"    :     2,
    "gradients"                   :     2,
    "fallback-colors"             :     2,
    "font-sizes"                  :     2,
    "font-faces"                  :     2,
    "floats"                      :     2,
    "star-property-hack"          :     2,
    "outline-none"                :     2,
    "import"                      :     2,
    "ids"                         :     2,
    "underscore-property-hack"    :     2,
    "rules-count"                 :     2,
    "qualified-headings"          :     2,
    "selector-max"                :     2,
    "shorthand"                   :     2,
    "text-indent"                 :     2,
    "unique-headings"             :     2,
    "universal-selector"          :     2,
    "unqualified-attributes"      :     2,
    "vendor-prefix"               :     2,
    "zero-units"                  :     2
}