Stylelint rules proposal

.stylelintrc

{
  "rules": {
    "max-nesting-depth": 10,
    "at-rule-empty-line-before": ["always", {
        "ignore": ["first-nested"]
    }],
    "at-rule-no-vendor-prefix": true,
    "at-rule-semicolon-space-before": "never",
    "block-closing-brace-empty-line-before": "never",
    "block-closing-brace-newline-after": "always",
    "block-closing-brace-newline-before": "always",
    "block-closing-brace-space-after": "always-single-line",
    "block-closing-brace-space-before": "always-single-line",
    "block-no-empty": true,
    "block-opening-brace-space-after": "always-single-line",
    "block-opening-brace-space-before": "always",
    "color-named": "never",
    "color-no-hex": true,
    "color-no-invalid-hex": true,
    "comment-no-empty": true,
    "custom-property-empty-line-before": "never",
    "custom-property-pattern": [ "never", {
        "ignore": ["after-comment"]
    }],
    "declaration-block-no-duplicate-properties": true,
    "declaration-block-no-redundant-longhand-properties": true,
    "declaration-block-no-shorthand-property-overrides": true,
    "declaration-block-semicolon-newline-after": "always",
    "declaration-block-semicolon-newline-before": "never-multi-line",
    "declaration-block-semicolon-space-before": "never",
    "declaration-block-single-line-max-declarations": 1,
    "declaration-block-trailing-semicolon": "always",
    "declaration-colon-space-after": "always",
    "declaration-colon-space-before": "never",
    "declaration-empty-line-before": "never",
    "declaration-no-important": true,
    "font-family-no-duplicate-names": true,
    "function-calc-no-unspaced-operator": true,
    "function-comma-space-after": "always",
    "function-comma-space-before": "never",
    "function-max-empty-lines": 0,
    "function-name-case": "lower",
    "function-url-quotes": "always",
    "indentation": "tab",
    "length-zero-no-unit": true,
    "max-empty-lines": 1,
    "max-line-length": 90,
    "media-feature-colon-space-after": "always",
    "media-feature-colon-space-before": "never",
    "media-feature-range-operator-space-after": "always",
    "media-feature-range-operator-space-before": "never",
    "media-query-list-comma-space-after": "always",
    "media-query-list-comma-space-before":"never",
    "no-descending-specificity": true,
    "no-duplicate-at-import-rules": true,
    "no-duplicate-selectors": true,
    "no-eol-whitespace": true,
    "no-extra-semicolons": true,
    "no-invalid-double-slash-comments": true,
    "number-leading-zero": "never",
    "number-max-precision": 2,
    "number-no-trailing-zeros": true,
    "property-no-vendor-prefix": true,
    "rule-empty-line-before": ["always", {
        "ignore": ["first-nested"]
    }],
    "selector-attribute-operator-space-after": "always",
    "selector-attribute-operator-space-before": "never",
    "selector-attribute-quotes": "always",
    "selector-combinator-space-after": "always",
    "selector-combinator-space-before": "always",
    "selector-list-comma-space-after": "always",
    "selector-list-comma-space-before": "never",
    "selector-max-attribute": 3,
    "selector-max-class": 5,
    "selector-max-combinators": 5,
    "selector-max-compound-selectors": 5,
    "selector-max-empty-lines": 0,
    "selector-max-id": 1,
    "selector-max-pseudo-class": 1,
    "selector-max-type": 4,
    "selector-no-vendor-prefix": true,
    "shorthand-property-no-redundant-values": true,
    "string-no-newline": true,
    "value-list-comma-space-after": "always",
    "value-list-comma-space-before": "never",
    "value-list-max-empty-lines": 1,
    "value-no-vendor-prefix": true
  }
}