.stylelintrc

{
  "extends": "stylelint-config-standard",
  "plugins": [
    "stylelint-declaration-strict-value",
    "stylelint-order",
    "stylelint-scss"
  ],
  "rules": {
    "at-rule-empty-line-before": [
      "always",
      { "except": ["blockless-group", "first-nested"], "ignore": ["after-comment"], "ignoreAtRules": ["else"] }
    ],
    "color-named": "never",
    "declaration-colon-newline-after": null,
    "declaration-empty-line-before": null,
    "declaration-property-value-blacklist": {
      "/^border/": ["none"]
    },
    "function-url-quotes": "always",
    "indentation": [2, { "ignore": ["value"] }],
    "max-nesting-depth": 5,
    "no-duplicate-selectors": true,
    "no-empty-source": [true, { "severity": "warning" }],
    "no-missing-end-of-source-newline": true,
    "number-max-precision": 4,
    "property-no-vendor-prefix": true,
    "selector-class-pattern": "^((?:-{1,2}|_{2})?[a-z0-9]+(?:(?:-{1,2}|_{2})[a-z0-9]+)*)(?:-{1,2}|_{2})?$",
    "selector-max-compound-selectors": 5,
    "selector-max-specificity": ["0,6,4"],
    "selector-no-qualifying-type": [true, { "ignore": ["class"] }],
    "selector-pseudo-element-colon-notation": "single",
    "string-quotes": "single",
    "unit-blacklist": [["rem", "em"]],
    "order/declaration-block-order": [
      "custom-properties",
      "dollar-variables",
      { "type": "at-rule", "name": "extend" },
      { "type": "at-rule", "name": "include", "hasBlock": false },
      "declarations",
      {
        "type": "at-rule",
        "name": "include",
        "hasBlock": true
      },
      "rules",
      "at-rules"
    ],
    "order/declaration-block-properties-alphabetical-order": true,
    "scale-unlimited/declaration-strict-value": [
      ["/color/"],
      {
        "ignoreKeywords": {
          "/color/": ["transparent", "inherit"]
        }
      }
    ],
    "scss/at-import-no-partial-leading-underscore": true,
    "scss/at-import-partial-extension-blacklist": ["scss"],
    "scss/dollar-variable-colon-space-after": "always",
    "scss/dollar-variable-colon-space-before": "never",
    "scss/dollar-variable-no-missing-interpolation": true,
    "scss/double-slash-comment-whitespace-inside": "always",
    "scss/operator-no-unspaced": true,
    "scss/selector-no-redundant-nesting-selector": true
  }
}