.stylelintrc.json

{
    "extends": "stylelint-config-standard-scss",
    "plugins": ["stylelint-scss"],
    "rules": {
        "alpha-value-notation": "number",
        "color-function-notation": "legacy",
        "color-hex-length": "long",
        "declaration-no-important": true,
        "function-no-unknown": [true, {"ignoreFunctions": ["unquote", "darken"]}],
        "font-weight-notation": "named-where-possible",
        "max-nesting-depth": 5,
        "no-descending-specificity": null,
        "property-no-vendor-prefix": null,
        "scss/at-mixin-pattern": "[a-z][a-z0-9_-]+",
        "selector-class-pattern": "[a-z][a-z0-9_-]+",
        "selector-max-compound-selectors": 5,
        "selector-no-vendor-prefix": null,
        "selector-no-qualifying-type": [true, {"ignore": ["attribute", "class"]}],
        "selector-type-no-unknown": [true, {"ignore": "custom-elements"}],
        "shorthand-property-no-redundant-values": null,
        "value-no-vendor-prefix": null
    }
}