.stylelintrc

{
  "rules": {
    "at-rule-empty-line-before": ["always", {
      except: ["after-same-name", "inside-block"],
      ignore: ["after-comment", "blockless-after-same-name-blockless"],
      ignoreAtRules: ["mixin", "function"]
    }],
    "at-rule-name-case": "lower",
    "at-rule-name-newline-after": "always-multi-line",
    "at-rule-name-space-after": "always-single-line",
    "at-rule-no-unknown": [true, {
      ignoreAtRules: [
        "extend",
        "at-root",
        "debug",
        "warn",
        "error",
        "if",
				"else",
        "for",
        "each",
        "while",
        "mixin",
        "content",
        "include",
        "function",
        "return"
      ]
    }],
    "at-rule-no-vendor-prefix": true,
    "at-rule-semicolon-newline-after": "always",
    "at-rule-semicolon-space-before": "never",

    "block-closing-brace-empty-line-before": "never",
    "block-closing-brace-newline-after": "always",
    "block-closing-brace-space-before": "always-single-line",
    "block-no-empty": true,
    "block-opening-brace-newline-after": "always-multi-line",
    "block-opening-brace-space-after": "always-single-line",
    "block-opening-brace-space-before": "always",

    "color-hex-case": "upper",
    "color-hex-length": "long",
    "color-named": "never",
    "color-no-invalid-hex": true,

    "comment-empty-line-before": ["always", {
      ignore: ["stylelint-commands"]
    }],
    "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-semicolon-newline-after": "always-multi-line",
    "declaration-block-semicolon-newline-before": "never-multi-line",
    "declaration-block-semicolon-space-after": "always-single-line",
    "declaration-block-semicolon-space-before": "never",
    "declaration-block-single-line-max-declarations": 3,
    "declaration-block-trailing-semicolon": "always",
    "declaration-colon-newline-after": "always-multi-line",
    "declaration-colon-space-after": "always-single-line",
    "declaration-colon-space-before": "never",
    "declaration-empty-line-before": "never",
    "declaration-no-important": true,

    "font-family-name-quotes": "always-where-recommended",
    "font-family-no-duplicate-names": true,
    "font-weight-notation": "numeric",

    "function-calc-no-unspaced-operator": true,
    "function-comma-newline-after": "never-multi-line",
    "function-comma-newline-before": "never-multi-line",
    "function-comma-space-after": "always",
    "function-comma-space-before": "never",
    "function-linear-gradient-no-nonstandard-direction": true,
    "function-max-empty-lines": 0,
    "function-name-case": ["lower", {
      ignoreFunctions: ["/^get.*$/"]
    }],
    "function-parentheses-newline-inside": "never-multi-line",
    "function-parentheses-space-inside": "never",
    "function-url-scheme-blacklist": ["ftp", "/^http/"],
    "function-url-no-scheme-relative": true,
    "function-url-quotes": "always",
    "function-whitespace-after": "always",

    "indentation": 2,

    "keyframe-declaration-no-important": true,
    "length-zero-no-unit": true,
    "max-empty-lines": 5,
    "max-line-length": 80,
    "max-nesting-depth": 3,

    "media-feature-colon-space-after": "always",
    "media-feature-colon-space-before": "never",
    "media-feature-name-case": "lower",
    "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",
    "media-query-list-comma-newline-after": "never-multi-line",
    "media-query-list-comma-newline-before": "never-multi-line",
    "media-query-list-comma-space-after": "always",
    "media-query-list-comma-space-before": "never",

    "no-descending-specificity": true,
    "no-duplicate-selectors": true,
    "no-empty-source": true,
    "no-eol-whitespace": true,
    "no-extra-semicolons": true,
    "no-invalid-double-slash-comments": true,
    "no-missing-end-of-source-newline": true,
    "no-unknown-animations": true,

    "number-leading-zero": "always",
    "number-max-precision": 3,
    "number-no-trailing-zeros": true,

    "property-case": "lower",
    "property-no-unknown": true,
    "property-no-vendor-prefix": true,

    "rule-empty-line-before": ["always-multi-line", {
      ignore: ["after-comment"]
    }],
    "selector-attribute-brackets-space-inside": "never",
    "selector-attribute-operator-space-after": "never",
    "selector-attribute-operator-space-before": "never",
    "selector-attribute-quotes": "always",
    "selector-combinator-space-after": "always",
    "selector-combinator-space-before": "always",
    "selector-descendant-combinator-no-non-space": true,
    "selector-list-comma-newline-before": "never-multi-line",
    "selector-list-comma-space-after": "always-single-line",
    "selector-list-comma-space-before": "never",
    "selector-max-empty-lines": 0,
    "selector-max-compound-selectors": 3,

    "selector-max-attribute": 1,
    "selector-max-id": 0,
    "selector-no-qualifying-type": true,

    "selector-max-universal": 0,
    "selector-no-vendor-prefix": true,
    "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": "double",
    "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": "single",
    "time-min-milliseconds": 100,
    "unit-case": "lower",
    "unit-no-unknown": true,
    "value-keyword-case": "lower",
    "value-list-comma-newline-after": "always-multi-line",
    "value-list-comma-newline-before": "never-multi-line",
    "value-list-comma-space-after": "always",
    "value-list-comma-space-before": "never",
    "value-list-max-empty-lines": 0,
    "value-no-vendor-prefix": true
  }
}