.stylelintrc.json

{
  "plugins": [
    "stylelint-scss"
  ],
  "ignoreFiles": [
    "craft/**/*.scss"
  ],
  "defaultSeverity": "warning",
  "rules": {
      "scss/dollar-variable-no-missing-interpolation": true,
      "indentation": "tab",
      "string-quotes": "single",
      "no-duplicate-selectors": true,
      "color-hex-case": "lower",
      "color-hex-length": "short",
      "color-named": "never",
      "selector-combinator-space-after": "always",
      "selector-attribute-quotes": "always",
      "selector-attribute-operator-space-before": "never",
      "selector-attribute-operator-space-after": "never",
      "selector-attribute-brackets-space-inside": "never",
      "declaration-block-trailing-semicolon": "always",
      "declaration-colon-space-before": "never",
      "declaration-colon-space-after": "always",
      "property-no-vendor-prefix": true,
      "value-no-vendor-prefix": true,
      "number-leading-zero": "always",
      "font-weight-notation": "numeric",
      "font-family-name-quotes": "always-unless-keyword",
      "comment-whitespace-inside": "always",
      "comment-empty-line-before": "always",
      "at-rule-no-vendor-prefix": true,
      "rule-empty-line-before": [
        "always",
        {
          "except": [
            "first-nested"
          ]
        }
      ],
      "selector-pseudo-element-colon-notation": "double",
      "selector-no-vendor-prefix": true,
      "media-feature-range-operator-space-before": "always",
      "media-feature-range-operator-space-after": "always",
      "media-feature-parentheses-space-inside": "never",
      "media-feature-name-no-vendor-prefix": true,
      "media-feature-colon-space-before": "never",
      "media-feature-colon-space-after": "always"
  }
}