.stylelintrc.yml

"rules": {
  "at-rule-empty-line-before": [ "always", {
    except: ["blockless-after-blockless", "inside-block"],
    ignore: ["after-comment"],
  } ],
  "at-rule-name-case": "lower",
  "at-rule-name-space-after": "always-single-line",
  "at-rule-no-unknown": [ true, {
    ignoreAtRules: ["extend", "mixin", "include", "each", "if", "else", "warn", "function", "return"],
  } ],
  "at-rule-semicolon-newline-after": "always",
  "block-closing-brace-newline-after": "always",
  "block-closing-brace-newline-before": "always",
  "block-opening-brace-newline-after": "always",
  "block-opening-brace-space-before": "always",
  "color-hex-case": "lower",
  "color-hex-length": "short",
  "color-named": "never",
  "color-no-invalid-hex": true,
  "comment-empty-line-before": [ "always", {
    ignore: ["stylelint-commands"],
  } ],
  "declaration-bang-space-after": "never",
  "declaration-bang-space-before": "always",
  "declaration-block-no-duplicate-properties": [ true, {
    ignore: ["consecutive-duplicates"],
  } ],
  "declaration-block-no-shorthand-property-overrides": true,
  "declaration-block-semicolon-newline-after": "always",
  "declaration-block-semicolon-space-before": "never",
  "declaration-block-trailing-semicolon": "always",
  "declaration-colon-newline-after": "always-multi-line",
  "declaration-colon-space-after": "always-single-line",
  "declaration-colon-space-before": "never",
  "font-family-name-quotes": "always-where-recommended",
  "font-weight-notation": "numeric",
  "function-calc-no-unspaced-operator": true,
  "function-comma-space-after": "always",
  "function-comma-space-before": "never",
  "function-linear-gradient-no-nonstandard-direction": true,
  "function-max-empty-lines": 1,
  "function-name-case": "lower",
  "function-parentheses-space-inside": "never",
  "function-url-quotes": "never",
  "function-whitespace-after": "always",
  "indentation": "tab",
  "keyframe-declaration-no-important": true,
  "length-zero-no-unit": true,
  "max-empty-lines": 2,
  "max-line-length": [ 80, {
    "ignore": "non-comments",
    "ignorePattern": "/https?:\/\/[0-9,a-z]*.*/"
  } ],
  "media-feature-colon-space-after": "always",
  "media-feature-colon-space-before": "never",
  "media-feature-range-operator-space-after": "always",
  "media-feature-range-operator-space-before": "always",
  "media-query-list-comma-newline-after": "always-multi-line",
  "media-query-list-comma-space-after": "always-single-line",
  "media-query-list-comma-space-before": "never",
  "no-eol-whitespace": true,
  "no-extra-semicolons": true,
  "no-invalid-double-slash-comments": true,
  "no-missing-end-of-source-newline": true,
  "number-leading-zero": "never",
  "number-no-trailing-zeros": true,
  "property-case": "lower",
  "property-no-unknown": true,
  "rule-empty-line-before": [ "always", {
    except: ["after-single-line-comment"]
  } ],
  "selector-attribute-brackets-space-inside": "never",
  "selector-attribute-operator-space-after": "never",
  "selector-attribute-operator-space-before": "never",
  "selector-attribute-quotes": "always",
  "selector-class-pattern": [
    "^[a-z]+(-[a-z]+)*",
      {
        "message": "Selector should use lowercase and separate words with hyphens (selector-class-pattern)",
      },
    ],
    "selector-id-pattern": [
      "^[a-z]+(-[a-z]+)*",
      {
        "message": "Selector should use lowercase and separate words with hyphens (selector-id-pattern)",
      },
    ],
  "selector-combinator-space-after": "always",
  "selector-combinator-space-before": "always",
  "selector-list-comma-newline-after": "always",
  "selector-list-comma-space-before": "never",
  "selector-max-empty-lines": 0,
  "selector-pseudo-class-case": "lower",
  "selector-pseudo-class-no-unknown": true,
  "selector-pseudo-class-parentheses-space-inside": "never",
  "selector-pseudo-element-case": "lower",
  "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,
  "string-quotes": "double",
  "unit-case": "lower",
  "unit-no-unknown": true,
  "value-keyword-case": "lower",
  "value-list-comma-newline-after": "always-multi-line",
  "value-list-comma-space-after": "always-single-line",
  "value-list-comma-space-before": "never",
}