.stylelintrc.json

{
  "defaultSeverity": "warning",
  "extends": "stylelint-config-standard",
  "plugins": [
    "stylelint-no-unsupported-browser-features"
  ],
  "rules": {
    "plugin/no-unsupported-browser-features": [
      true,
      {
        "severity": "warning",
        "ignore": [
          "flexbox",
          "css-featurequeries",
          "css-boxshadow",
          "transforms2d",
          "border-radius",
          "css-fixed",
          "background-img-opts",
          "user-select-none",
          "outline",
          "viewport-units",
          "css-media-resolution",
          "object-fit",
          "css-clip-path",
          "css-masks"
        ]
      }
    ],
    "declaration-empty-line-before": null,
    "block-no-empty": true,
    "comment-no-empty": true,
    "at-rule-empty-line-before": [
      "always",
      {
        "ignore": [
          "first-nested",
          "blockless-after-same-name-blockless"
        ]
      }
    ],
    "at-rule-no-unknown": [
      true,
      {
        "ignoreAtRules": [
          "mixin",
          "include"
        ]
      }
    ]
  }
}