.stylelintrc

{
    "rules": {
        "indentation": 4,
        "selector-list-comma-newline-after": "always",
        "declaration-colon-space-after": "always",
        "declaration-colon-space-before": "never",
        "block-opening-brace-space-before": "always",
        "declaration-block-single-line-max-declarations": 1,
        "rule-empty-line-before": ["always", {
            "ignore": ["after-comment"],
            "except": ["first-nested"]
        }],
        "comment-empty-line-before": ["always", {
          "ignore": ["stylelint-commands"]
        }],
        "max-nesting-depth": 3,
        "max-empty-lines": [1, {
            "ignore": ["comments"]
        }],
        "selector-max-compound-selectors": 3,
        "selector-no-qualifying-type": [true, {
            "ignore": ["attribute", "class"]
        }],
        "no-duplicate-selectors": true,
        "block-no-empty": true,
        "at-rule-empty-line-before": ["always", {
            "except": ["first-nested", "after-same-name"]
        }],
        "at-rule-name-case": "lower",
        "color-hex-case": "lower",
        "color-hex-length": "short",
        "color-no-invalid-hex": true,
        "string-quotes": "single",
        "value-no-vendor-prefix": true,
        "value-list-comma-space-after": "always-single-line",
        "shorthand-property-no-redundant-values": true,
        "comment-whitespace-inside": "always",
        "function-comma-space-after": "always-single-line",
        "function-comma-space-before": "never",
        "length-zero-no-unit": true,
        "number-no-trailing-zeros": true,
        "declaration-block-trailing-semicolon": "always",
        "declaration-block-no-duplicate-properties": [true, {
            "ignore": ["consecutive-duplicates-with-different-values"]
        }],
        "declaration-block-semicolon-newline-after": "always",
        "block-closing-brace-empty-line-before": "never",
        "block-closing-brace-newline-before": "always"
    }
}