.stylelintrc.json

{
  "extends": [
    "stylelint-config-standard"
  ],
  "fix": true,
  "formatter": "verbose",
  "plugins": [
    "stylelint-scss"
  ],
  "rules": {
    "selector-list-comma-newline-after": "always",
    "selector-type-case": "lower",
    "at-rule-no-unknown": null,
    "scss/at-rule-no-unknown": true,
    "declaration-empty-line-before": "never",
    "rule-empty-line-before": [ "always-multi-line", {
      "except": ["inside-block"],
      "ignore": ["after-comment"]
    }],
    "no-descending-specificity": true,
    "declaration-block-no-duplicate-properties": true,
    "declaration-colon-space-after": "always-single-line",
    "at-rule-whitelist": ["include", "import", "keyframes", "mixin", "extend", "media"],
    "string-quotes": "double",
    "no-duplicate-selectors": true,
    "color-named": "never",
    "color-hex-length": "long",
    "color-hex-case": "lower",
    "selector-attribute-quotes": "always",
    "declaration-block-trailing-semicolon": "always",
    "declaration-colon-space-before": "never",
    "property-no-vendor-prefix": true,
    "value-no-vendor-prefix": true,
    "number-leading-zero": "always",
    "function-url-quotes": "always",
    "font-family-name-quotes": "always-unless-keyword",
    "at-rule-no-vendor-prefix": true,
    "selector-no-vendor-prefix": true,
    "media-feature-name-no-vendor-prefix": true,
    "max-empty-lines": 2,
    "property-no-unknown": [true, {
      "ignoreProperties": ["composes"]
    }],
    "selector-pseudo-class-no-unknown": [true, {
      "ignorePseudoClasses": ["global"]
    }],
    "selector-pseudo-element-no-unknown": [true, {
      "ignorePseudoElements": ["global"]
    }]
  },
  "syntax": "scss"
}