.stylelintrc.json

{
  "processors": [
    "stylelint-processor-html"
  ],
  "extends": [
    "stylelint-config-standard",
    "stylelint-config-rational-order"
  ],
  "rules": {
    "no-empty-source": null,
    "block-opening-brace-space-before": null,
    "block-closing-brace-newline-before": null,
    "declaration-block-trailing-semicolon": "never",
    "indentation": null,
    "string-quotes": "single",
    "no-duplicate-selectors": true,
    "color-hex-case": "lower",
    "color-hex-length": "short",
    "selector-combinator-space-after": "always",
    "selector-attribute-quotes": "always",
    "selector-attribute-operator-space-before": "never",
    "selector-attribute-operator-space-after": "never",
    "selector-attribute-brackets-space-inside": "never",
    "declaration-colon-space-before": "never",
    "declaration-colon-space-after": "always",
    "property-no-vendor-prefix": true,
    "value-no-vendor-prefix": true,
    "number-leading-zero": "always",
    "function-url-quotes": "always",
    "font-weight-notation": "named-where-possible",
    "font-family-name-quotes": "always-unless-keyword",
    "font-family-no-missing-generic-family-keyword": [
      true,
      {
        "severity": "warning"
      }
    ],
    "comment-whitespace-inside": "always",
    "comment-empty-line-before": null,
    "at-rule-no-vendor-prefix": true,
    "rule-empty-line-before": [
      "always-multi-line",
      {
        "ignore": "first-nested"
      }
    ],
    "selector-pseudo-element-colon-notation": "single",
    "selector-pseudo-class-parentheses-space-inside": "never",
    "selector-no-vendor-prefix": true,
    "media-feature-range-operator-space-before": "always",
    "media-feature-range-operator-space-after": "always",
    "media-feature-parentheses-space-inside": "never",
    "media-feature-name-no-vendor-prefix": true,
    "media-feature-colon-space-before": "never",
    "media-feature-colon-space-after": "always",
    "declaration-empty-line-before": null,
    "property-no-unknown": [
      true,
      {
        "ignoreProperties": [
          "font-smoothing"
        ]
      }
    ],
    "selector-list-comma-newline-after": "always-multi-line",
    "no-descending-specificity": [
      true,
      {
        "severity": "warning"
      }
    ]
  }
}