.stylelintrc.json

{
  "plugins": ["stylelint-prettier"],
  "extends": ["stylelint-prettier/recommended"],
  "rules": {
    "at-rule-name-space-after": "always",
    "at-rule-no-unknown": [
      true,
      {
        "ignoreAtRules": ["/define-mixin/i"]
      }
    ],
    "at-rule-no-vendor-prefix": true,
    "block-no-empty": true,
    "color-no-invalid-hex": true,
    "comment-no-empty": true,
    "comment-whitespace-inside": "always",
    "declaration-bang-space-after": "never",
    "declaration-bang-space-before": "always",
    "declaration-block-no-duplicate-properties": true,
    "declaration-block-no-redundant-longhand-properties": true,
    "declaration-block-no-shorthand-property-overrides": true,
    "declaration-block-single-line-max-declarations": 1,
    "font-family-name-quotes": "always-unless-keyword",
    "font-family-no-duplicate-names": true,
    "font-weight-notation": "numeric",
    "function-calc-no-unspaced-operator": true,
    "function-linear-gradient-no-nonstandard-direction": true,
    "function-name-case": "lower",
    "function-url-quotes": "never",
    "function-whitespace-after": "always",
    "keyframe-declaration-no-important": true,
    "length-zero-no-unit": true,
    "max-nesting-depth": 2,
    "media-feature-colon-space-after": "always",
    "media-feature-colon-space-before": "never",
    "media-feature-name-no-unknown": true,
    "media-feature-name-no-vendor-prefix": true,
    "media-feature-parentheses-space-inside": "never",
    "media-feature-range-operator-space-after": "always",
    "media-feature-range-operator-space-before": "always",
    "no-duplicate-selectors": true,
    "no-invalid-double-slash-comments": true,
    "number-max-precision": 2,
    "property-no-unknown": true,
    "property-no-vendor-prefix": true,
    "selector-attribute-brackets-space-inside": "never",
    "selector-attribute-operator-space-after": "never",
    "selector-attribute-operator-space-before": "never",
    "selector-attribute-quotes": "always",
    "selector-max-compound-selectors": 3,
    "selector-max-id": 0,
    "selector-max-type": 2,
    "selector-no-qualifying-type": [
      true,
      {
        "ignore": ["attribute"]
      }
    ],
    "selector-no-vendor-prefix": true,
    "selector-pseudo-class-no-unknown": true,
    "selector-pseudo-class-parentheses-space-inside": "never",
    "selector-pseudo-element-colon-notation": "single",
    "selector-pseudo-element-no-unknown": true,
    "selector-type-case": "lower",
    "selector-type-no-unknown": true,
    "shorthand-property-no-redundant-values": true,
    "string-no-newline": true,
    "unit-no-unknown": true,
    "value-keyword-case": "lower",
    "value-no-vendor-prefix": true
  }
}