.stylelintrc.json

{
  "rules": {
    "at-rule-empty-line-before": [
      "always",
      {
        "except": [
          "first-nested",
          "blockless-after-same-name-blockless"
        ],
        "ignore": ["after-comment"]
      }
    ],

    "at-rule-name-case": "lower",

    "at-rule-name-space-after": "always-single-line",

    "color-no-invalid-hex": true,

    "block-opening-brace-space-before": "always",

    "color-hex-case": "upper",

    "color-named": "never",

    "declaration-colon-space-after": "always",

    "declaration-block-semicolon-newline-after": "always",
    "declaration-block-no-duplicate-properties": true,

    "font-family-no-duplicate-names": true,
    "indentation": 2,
    "max-empty-lines": 1,
    "no-duplicate-at-import-rules": true,
    "no-duplicate-selectors": true,
    "no-empty-source": true,
    "no-extra-semicolons": true,
    "no-invalid-double-slash-comments": true,

    "rule-empty-line-before": [
      "always",
      {
        "except": ["first-nested"],
        "ignore": ["after-comment"]
      }
    ],

    "unit-blacklist": ["em"]
  }
}