.stylelintrc.json

{
  "rules": {
    "color-hex-case": null,
    "color-hex-length": null,
    "color-named": ["never", { "severity": "warning" }],
    "color-no-hex": [true, { "severity": "warning" }],
    "color-no-invalid-hex": [true, { "severity": "error" }],

    "font-family-name-quotes": [
      "always-unless-keyword",
      { "severity": "warning" }
    ],
    "font-family-no-duplicate-names": [true, { "severity": "warning" }],

    "font-weight-notation": [
      "numeric",
      { "severity": "warning", "ignore": ["relative"] }
    ],

    "function-blacklist": null,
    "function-calc-no-unspaced-operator": [true, { "severity": "warning" }],
    "function-comma-newline-after": null,
    "function-comma-newline-before": null,
    "function-comma-space-after": [
      "always-single-line",
      { "severity": "warning" }
    ],
    "function-comma-space-before": ["never", { "severity": "warning" }],
    "function-linear-gradient-no-nonstandard-direction": [
      true,
      { "severity": "error" }
    ],
    "function-max-empty-lines": [0, { "severity": "warning" }],
    "function-name-case": ["lower", { "severity": "warning" }],
    "function-parentheses-newline-inside": [
      "always-multi-line",
      { "severity": "warning" }
    ],
    "function-parentheses-space-inside": [
      "never-single-line",
      { "severity": "warning" }
    ],
    "function-url-no-scheme-relative": null,
    "function-url-quotes": ["always", { "severity": "warning" }],
    "function-url-scheme-whitelist": null,
    "function-whitelist": null,
    "function-whitespace-after": ["always", { "severity": "warning" }],

    "number-leading-zero": ["always", { "severity": "warning" }],
    "number-max-precision": [4, { "severity": "warning" }],
    "number-no-trailing-zeros": null,

    "string-no-newline": [true, { "severity": "error" }],
    "string-quotes": ["double", { "severity": "warning" }],

    "length-zero-no-unit": null,

    "time-min-milliseconds": null,

    "unit-blacklist": null,
    "unit-case": ["lower", { "severity": "warning" }],
    "unit-no-unknown": [true, { "severity": "error" }],
    "unit-whitelist": null,

    "value-keyword-case": ["lower", { "severity": "warning" }],
    "value-no-vendor-prefix": [true, { "severity": "warning" }],

    "value-list-comma-newline-after": null,
    "value-list-comma-newline-before": [
      "never-multi-line",
      { "severity": "warning" }
    ],
    "value-list-comma-space-after": [
      "always-single-line",
      { "severity": "warning" }
    ],
    "value-list-comma-space-before": ["never", { "severity": "warning" }],
    "value-list-max-empty-lines": [0, { "severity": "warning" }],

    "custom-property-empty-line-before": null,
    "custom-property-pattern": null,

    "shorthand-property-no-redundant-values": [true, { "severity": "warning" }],

    "property-blacklist": null,
    "property-case": ["lower", { "severity": "warning" }],
    "property-no-unknown": [true, { "severity": "error" }],
    "property-no-vendor-prefix": [true, { "severity": "warning" }],
    "property-whitelist": null,

    "keyframe-declaration-no-important": [true, { "severity": "warning" }],

    "declaration-bang-space-after": ["never", { "severity": "warning" }],
    "declaration-bang-space-before": ["always", { "severity": "warning" }],
    "declaration-colon-newline-after": null,
    "declaration-colon-space-after": [
      "always-single-line",
      { "severity": "warning" }
    ],
    "declaration-colon-space-before": ["never", { "severity": "warning" }],
    "declaration-empty-line-before": ["never", { "severity": "warning" }],
    "declaration-no-important": [true, { "severity": "warning" }],
    "declaration-property-unit-blacklist": null,
    "declaration-property-unit-whitelist": null,
    "declaration-property-value-blacklist": null,
    "declaration-property-value-whitelist": null,

    "declaration-block-no-duplicate-properties": [
      true,
      { "severity": "error" }
    ],
    "declaration-block-no-redundant-longhand-properties": [
      true,
      { "severity": "warning", "ignoreShorthands": ["animation"] }
    ],
    "declaration-block-no-shorthand-property-overrides": [
      true,
      { "severity": "warning" }
    ],
    "declaration-block-semicolon-newline-after": [
      "always-multi-line",
      { "severity": "warning" }
    ],
    "declaration-block-semicolon-newline-before": null,
    "declaration-block-semicolon-space-after": [
      "always-single-line",
      { "severity": "warning" }
    ],
    "declaration-block-semicolon-space-before": [
      "never",
      { "severity": "warning" }
    ],
    "declaration-block-single-line-max-declarations": [
      1,
      { "severity": "warning" }
    ],
    "declaration-block-trailing-semicolon": [
      "always",
      { "severity": "warning" }
    ],

    "block-closing-brace-empty-line-before": [
      "never",
      { "severity": "warning" }
    ],
    "block-closing-brace-newline-after": ["always", { "severity": "warning" }],
    "block-closing-brace-newline-before": [
      "always-multi-line",
      { "severity": "warning" }
    ],
    "block-closing-brace-space-after": null,
    "block-closing-brace-space-before": [
      "always-single-line",
      { "severity": "warning" }
    ],
    "block-no-empty": [true, { "severity": "warning" }],
    "block-opening-brace-newline-after": [
      "always-multi-line",
      { "severity": "warning" }
    ],
    "block-opening-brace-newline-before": null,
    "block-opening-brace-space-after": [
      "always-single-line",
      { "severity": "warning" }
    ],
    "block-opening-brace-space-before": ["always", { "severity": "warning" }],

    "selector-attribute-brackets-space-inside": [
      "never",
      { "severity": "warning" }
    ],
    "selector-attribute-operator-blacklist": null,
    "selector-attribute-operator-space-after": [
      "never",
      { "severity": "warning" }
    ],
    "selector-attribute-operator-space-before": [
      "never",
      { "severity": "warning" }
    ],
    "selector-attribute-operator-whitelist": null,
    "selector-attribute-quotes": ["always", { "severity": "warning" }],
    "selector-class-pattern": null,
    "selector-combinator-space-after": ["always", { "severity": "warning" }],
    "selector-combinator-space-before": ["always", { "severity": "warning" }],
    "selector-descendant-combinator-no-non-space": [
      true,
      { "severity": "warning" }
    ],
    "selector-id-pattern": null,
    "selector-max-compound-selectors": [3, { "severity": "warning" }],
    "selector-max-specificity": ["0,5,0", { "severity": "warning" }],
    "selector-nested-pattern": null,
    "selector-no-qualifying-type": [
      true,
      {
        "severity": "warning",
        "ignore": ["attribute"]
      }
    ],
    "selector-no-vendor-prefix": [true, { "severity": "warning" }],
    "selector-pseudo-class-blacklist": null,
    "selector-pseudo-class-case": ["lower", { "severity": "warning" }],
    "selector-pseudo-class-no-unknown": [true, { "severity": "error" }],
    "selector-pseudo-class-parentheses-space-inside": [
      "never",
      { "severity": "warning" }
    ],
    "selector-pseudo-class-whitelist": null,
    "selector-pseudo-element-case": ["lower", { "severity": "warning" }],
    "selector-pseudo-element-colon-notation": [
      "double",
      { "severity": "warning" }
    ],
    "selector-pseudo-element-no-unknown": [true, { "severity": "warning" }],
    "selector-type-case": ["lower", { "severity": "warning" }],
    "selector-type-no-unknown": [true, { "severity": "error" }],
    "selector-max-empty-lines": [0, { "severity": "warning" }],

    "selector-list-comma-newline-after": ["always", { "severity": "warning" }],
    "selector-list-comma-newline-before": [
      "never-multi-line",
      { "severity": "warning" }
    ],
    "selector-list-comma-space-after": [
      "always-single-line",
      { "severity": "warning" }
    ],
    "selector-list-comma-space-before": ["never", { "severity": "warning" }],

    "rule-empty-line-before": [
      "always-multi-line",
      {
        "severity": "warning",
        "except": ["first-nested"],
        "ignore": ["after-comment"]
      }
    ],

    "media-feature-colon-space-after": ["always", { "severity": "warning" }],
    "media-feature-colon-space-before": ["never", { "severity": "warning" }],
    "media-feature-name-blacklist": null,
    "media-feature-name-case": ["lower", { "severity": "warning" }],
    "media-feature-name-no-unknown": [true, { "severity": "warning" }],
    "media-feature-name-no-vendor-prefix": [true, { "severity": "warning" }],
    "media-feature-name-whitelist": null,
    "media-feature-parentheses-space-inside": [
      "never",
      { "severity": "warning" }
    ],
    "media-feature-range-operator-space-after": [
      "always",
      { "severity": "warning" }
    ],
    "media-feature-range-operator-space-before": [
      "always",
      { "severity": "warning" }
    ],

    "custom-media-pattern": null,

    "media-query-list-comma-newline-after": [
      "never-multi-line",
      { "severity": "warning" }
    ],
    "media-query-list-comma-newline-before": [
      "never-multi-line",
      { "severity": "warning" }
    ],
    "media-query-list-comma-space-after": [
      "always-single-line",
      { "severity": "warning" }
    ],
    "media-query-list-comma-space-before": ["never", { "severity": "warning" }],

    "at-rule-blacklist": null,
    "at-rule-empty-line-before": [
      "always",
      {
        "severity": "warning",
        "except": ["blockless-after-same-name-blockless", "first-nested"],
        "ignore": ["after-comment"]
      }
    ],
    "at-rule-name-case": ["lower", { "severity": "warning" }],
    "at-rule-name-newline-after": null,
    "at-rule-name-space-after": ["always", { "severity": "warning" }],
    "at-rule-no-unknown": [true, { "severity": "warning" }],
    "at-rule-no-vendor-prefix": [true, { "severity": "warning" }],
    "at-rule-semicolon-newline-after": ["always", { "severity": "warning" }],
    "at-rule-semicolon-space-before": ["never", { "severity": "warning" }],
    "at-rule-whitelist": null,

    "comment-empty-line-before": null,
    "comment-no-empty": [true, { "severity": "warning" }],
    "comment-whitespace-inside": ["always", { "severity": "warning" }],
    "comment-word-blacklist": [["TODO"], { "severity": "warning" }],

    "indentation": [2, { "severity": "error" }],
    "max-empty-lines": [1, { "severity": "warning" }],
    "max-line-length": [120, { "severity": "warning" }],
    "max-nesting-depth": [3, { "severity": "warning" }],
    "no-descending-specificity": null,
    "no-duplicate-selectors": null,
    "no-empty-source": [true, { "severity": "warning" }],
    "no-eol-whitespace": [true, { "severity": "warning" }],
    "no-extra-semicolons": [true, { "severity": "warning" }],
    "no-invalid-double-slash-comments": null,
    "no-missing-end-of-source-newline": [true, { "severity": "warning" }],
    "no-unknown-animations": [true, { "severity": "error" }]
  }
}