.stylelintrc

{
    "rules": {
        "color-hex-case": "lower",
        "color-hex-length": "short",
        "color-named": "never",
        "color-no-invalid-hex": true,

        "function-calc-no-unspaced-operator": true,
        "function-comma-space-after": "always-single-line",
        "function-comma-space-before": "never",
        "function-linear-gradient-no-nonstandard-direction": true,
        "function-max-empty-lines": 0,
        "function-name-case": "lower",
        "function-parentheses-space-inside": "never-single-line",

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

        "string-no-newline": true,
        "string-quotes": "double",

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

        "unit-blacklist": ["pt"],
        "unit-case": "lower",
        "unit-no-unknown": true,

        "value-keyword-case": "lower",

        "value-list-comma-newline-after": "never-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,

        "shorthand-property-no-redundant-values": true,

        "property-case": "lower",
        "property-no-unknown": [
            true
        ],

        "declaration-bang-space-after": "never",
        "declaration-bang-space-before": "always",
        "declaration-colon-space-after": "always",
        "declaration-colon-space-before": "never",
        "declaration-no-important": true,

        "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",
        "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": 1,
        "declaration-block-trailing-semicolon": "always",

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

        "selector-class-pattern": "(jwplayer)|jw-[a-z]+",
        "selector-combinator-space-after": "always",
        "selector-combinator-space-before": "always",
        "selector-descendant-combinator-no-non-space": true,
        "selector-max-id": 0,
        "selector-pseudo-class-case": "lower",
        "selector-pseudo-class-no-unknown": true,
        "selector-pseudo-element-case": "lower",
        "selector-pseudo-element-no-unknown": [
            true,
            { "ignorePseudoElements": ["cue"] }
        ],
        "selector-type-case": "lower",
        "selector-type-no-unknown": true,
        "selector-max-empty-lines": 0,

        "selector-list-comma-newline-after": "always",
        "selector-list-comma-newline-before": "never-multi-line",
        "selector-list-comma-space-before": "never",

        "media-query-list-comma-newline-after": "always-multi-line",

        "comment-no-empty": true,
        "comment-whitespace-inside": "always",
        "comment-word-blacklist": ["/^TODO:/"],

        "indentation": [4, {
            "indentClosingBrace": false
        }],
        "max-empty-lines": 1,
        "no-duplicate-selectors": true,
        "no-empty-source": true,
        "no-eol-whitespace": true,
        "no-extra-semicolons": true,
        "no-invalid-double-slash-comments": true,
        "rule-empty-line-before": [
            "always-multi-line",
            { "except": ["after-single-line-comment", "first-nested"] }
        ]
    }
}