.stylelintrc

{
  "rules": {
    "selector-class-pattern": "^([a-z][a-z0-9-_]*)$",
    "at-rule-no-unknown": true,
    "block-no-empty": true,
    "color-no-invalid-hex": true,
    "comment-no-empty": true,
    "declaration-block-no-duplicate-properties": true,
    "declaration-block-no-shorthand-property-overrides": true,
    "font-family-no-duplicate-names": true,
    "font-family-no-missing-generic-family-keyword": true,
    "function-calc-no-unspaced-operator": true,
    "function-linear-gradient-no-nonstandard-direction": true,
    "indentation": [2, {
      "except": ["value"]
    }],
    "keyframe-declaration-no-important": true,
    "media-feature-name-no-unknown": true,
    "no-descending-specificity": true,
    "no-duplicate-at-import-rules": true,
    "no-duplicate-selectors": true,
    "no-empty-source": true,
    "no-extra-semicolons": true,
    "no-invalid-double-slash-comments": true,
    "property-no-unknown": true,
    "rule-empty-line-before": [ "always", {
      "except": ["first-nested", "inside-block"],
      "ignore": ["after-comment"]
    } ],
    "selector-pseudo-class-no-unknown": true,
    "selector-pseudo-element-no-unknown": true,
    "selector-type-no-unknown": true,
    "string-no-newline": true,
    "unit-no-unknown": true,
    "unit-whitelist": ["em", "px", "rem", "%", "ms", "vh", "vw", "deg", "fr", "s"]
  }
}