.stylelintrc

{
  "extends": "stylelint-config-standard",
  "rules": {
    "color-named": "never",
    "font-family-name-quotes": "always-where-recommended",
    "font-weight-notation": "numeric",
    "function-url-quotes": "always",
    "number-leading-zero": "never",
    "value-no-vendor-prefix": true,
    "value-list-comma-newline-before": "never-multi-line",
    "custom-property-empty-line-before": "never",
    "property-no-unknown": [
      true,
      {
        "ignoreProperties": [
          "composes",
          "all",
          "-webkit-appearance"
        ]
      }
    ],
    "declaration-block-semicolon-newline-after": "always",
    "block-opening-brace-newline-after": "always",
    "selector-attribute-quotes": "always",
    "selector-max-specificity": "0,5,2",
    "selector-pseudo-class-no-unknown": [
      true,
      {
        "ignorePseudoClasses": ["local", "global"]
      }
    ],
    "at-rule-empty-line-before": [
      "always",
      {
        "ignore": [
          "after-comment"
        ]
      }
    ],
    "indentation": [
      2,
      {
        "indentInsideParens": "once-at-root-twice-in-block"
      }
    ],
    "max-nesting-depth": 3,
    "no-duplicate-selectors": true,
    "no-unknown-animations": true
  }
}