.stylelintrc

{
  "extends": "stylelint-config-standard-scss",
  "rules": {
    "no-descending-specificity": null,
    "color-no-invalid-hex": true,

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

    "function-calc-no-unspaced-operator": true,
    "function-name-case": "lower",
    "function-url-no-scheme-relative": true,
    "function-url-quotes": "always",

    "string-no-newline": true,

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

    "unit-no-unknown": true,

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

    "property-no-unknown": true,

    "keyframe-declaration-no-important": true,

    "declaration-no-important": true,

    "declaration-block-single-line-max-declarations": 1,
    "declaration-block-no-shorthand-property-overrides": true,
    "declaration-block-no-duplicate-properties": true,

    "block-no-empty": true,

    "selector-pseudo-class-no-unknown": true,
    "selector-pseudo-element-no-unknown": true,
    "selector-type-case": "lower",
    "selector-type-no-unknown": true,

    "rule-empty-line-before": "always-multi-line",

    "media-feature-name-no-unknown": true,

    "comment-no-empty": true,

    "max-nesting-depth": 6,
    "no-duplicate-selectors": true,
    "no-unknown-animations": true,
    "no-invalid-double-slash-comments": true
  }
}