.stylelintrc.json

{
  "extends" : ["stylelint-config-standard"],
  "plugins": [
    "stylelint-value-no-exposed-custom-properties",
    "stylelint-use-nesting",
    "stylelint-selector-tag-no-without-class",
    "stylelint-selector-no-empty",
    "stylelint-rem-over-px",
    "@isnotdefined/stylelint-plugin",
    "stylelint-group-selectors",
    "stylelint-declaration-strict-value",
    "stylelint-declaration-block-no-ignored-properties"
  ],
  "defaultSeverity": "error",
  "rules": {
    "declaration-property-value-no-unknown": true,
    "at-rule-empty-line-before" : null,
    "at-rule-no-unknown": null,
    "plugin/value-no-exposed-custom-properties": true,
    "csstools/use-nesting": "always",
    "plugin/stylelint-selector-no-empty": true,
    "plugin/selector-tag-no-without-class": ["div", "span"],
    "rem-over-px/rem-over-px": true,
    "@isnotdefined/no-obsolete": true,
    "plugin/stylelint-group-selectors": true,
    "scale-unlimited/declaration-strict-value": "color",
    "plugin/declaration-block-no-ignored-properties": true
  }
}