This example config lists all of the rules and their primary options. You can remove (or turn off) the rules you don't want and edit the primary option of each rule to your liking.
You might want to learn a little about how rules are named and how they work together, to get a better idea of what each rule does.
{
"rules": {
"at-rule-blacklist": string|[],
"at-rule-empty-line-before": "always"|"never",
"at-rule-name-case": "lower"|"upper",
"at-rule-name-newline-after": "always"|"always-multi-line",
"at-rule-name-space-after": "always"|"always-single-line",
"at-rule-no-unknown": true,
"at-rule-no-vendor-prefix": true,
"at-rule-semicolon-newline-after": "always",
"at-rule-semicolon-space-before": "always"|"never",
"at-rule-whitelist": string|[],
"block-closing-brace-empty-line-before": "always-multi-line"|"never",
"block-closing-brace-newline-after": "always"|"always-single-line"|"never-single-line"|"always-multi-line"|"never-multi-line",
"block-closing-brace-newline-before": "always"|"always-multi-line"|"never-multi-line",
"block-closing-brace-space-after": "always"|"always-single-line"|"never-single-line"|"always-multi-line"|"never-multi-line",
"block-closing-brace-space-before": "always"|"never"|"always-single-line"|"never-single-line"|"always-multi-line"|"never-multi-line",
"block-no-empty": true,
"block-opening-brace-newline-after": "always"|"always-multi-line"|"never-multi-line",
"block-opening-brace-newline-before": "always"|"always-single-line"|"never-single-line"|"always-multi-line"|"never-multi-line",
"block-opening-brace-space-after": "always"|"always-single-line"|"never-single-line"|"always-multi-line"|"never-multi-line",
"block-opening-brace-space-before": "always"|"always-single-line"|"never-single-line"|"always-multi-line"|"never-multi-line",
"color-hex-case": "lower"|"upper",
"color-hex-length": "short"|"long",
"color-named": "always-where-possible"|"never",
"color-no-hex": true,
"color-no-invalid-hex": true,
"comment-empty-line-before": "always"|"never",
"comment-no-empty": true,
"comment-whitespace-inside": "always"|"never",
"comment-word-blacklist": string|[],
"custom-media-pattern": string,
"custom-property-empty-line-before": "always"|"never",
"custom-property-pattern": string,
"declaration-bang-space-after": "always"|"never",
"declaration-bang-space-before": "always"|"never",
"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"|"always-multi-line"|"never-multi-line",
"declaration-block-semicolon-newline-before": "always"|"always-multi-line"|"never-multi-line",
"declaration-block-semicolon-space-after": "always"|"never"|"always-single-line"|"never-single-line",
"declaration-block-semicolon-space-before": "always"|"never"|"always-single-line"|"never-single-line",
"declaration-block-single-line-max-declarations": int,
"declaration-block-trailing-semicolon": "always"|"never",
"declaration-colon-newline-after": "always"|"always-multi-line",
"declaration-colon-space-after": "always"|"never"|"always-single-line",
"declaration-colon-space-before": "always"|"never",
"declaration-empty-line-before": "always"|"never",
"declaration-no-important": true,
"declaration-property-unit-blacklist": {},
"declaration-property-unit-whitelist": {},
"declaration-property-value-blacklist": {},
"declaration-property-value-whitelist": {},
"font-family-name-quotes": "always-where-required"|"always-where-recommended"|"always-unless-keyword",
"font-family-no-duplicate-names": true,
"font-weight-notation": "numeric"|"named",
"function-blacklist": string|[],
"function-calc-no-unspaced-operator": true,
"function-comma-newline-after": "always"|"always-multi-line"|"never-multi-line",
"function-comma-newline-before": "always"|"always-multi-line"|"never-multi-line",
"function-comma-space-after": "always"|"never"|"always-single-line"|"never-single-line",
"function-comma-space-before": "always"|"never"|"always-single-line"|"never-single-line",
"function-linear-gradient-no-nonstandard-direction": true,
"function-max-empty-lines": int,
"function-name-case": "lower"|"upper",
"function-parentheses-newline-inside": "always"|"always-multi-line"|"never-multi-line",
"function-parentheses-space-inside": "always"|"never"|"always-single-line"|"never-single-line",
"function-url-data-uris": "always"|"never",
"function-url-no-scheme-relative": true,
"function-url-quotes": "always"|"never",
"function-url-scheme-whitelist": string|[],
"function-whitelist": string|[],
"function-whitespace-after": "always"|"never",
"indentation": int|"tab",
"keyframe-declaration-no-important": true,
"length-zero-no-unit": true,
"max-empty-lines": int,
"max-line-length": int,
"max-nesting-depth": int,
"media-feature-colon-space-after": "always"|"never",
"media-feature-colon-space-before": "always"|"never",
"media-feature-name-blacklist": string|[],
"media-feature-name-case": "lower"|"upper",
"media-feature-name-no-unknown": true,
"media-feature-name-no-vendor-prefix": true,
"media-feature-name-whitelist": string|[],
"media-feature-parentheses-space-inside": "always"|"never",
"media-feature-range-operator-space-after": "always"|"never",
"media-feature-range-operator-space-before": "always"|"never",
"media-query-list-comma-newline-after": "always"|"always-multi-line"|"never-multi-line",
"media-query-list-comma-newline-before": "always"|"always-multi-line"|"never-multi-line",
"media-query-list-comma-space-after": "always"|"never"|"always-single-line"|"never-single-line",
"media-query-list-comma-space-before": "always"|"never"|"always-single-line"|"never-single-line",
"no-descending-specificity": true,
"no-duplicate-selectors": true,
"no-empty-source": true,
"no-eol-whitespace": true,
"no-extra-semicolons": true,
"no-invalid-double-slash-comments": true,
"no-missing-end-of-source-newline": true,
"no-unknown-animations": true,
"number-leading-zero": "always"|"never",
"number-max-precision": int,
"number-no-trailing-zeros": true,
"property-blacklist": string|[],
"property-case": "lower"|"upper",
"property-no-unknown": true,
"property-no-vendor-prefix": true,
"property-whitelist": string|[],
"rule-empty-line-before": "always"|"never"|"always-multi-line"|"never-multi-line",
"selector-attribute-brackets-space-inside": "always"|"never",
"selector-attribute-operator-blacklist": string|[],
"selector-attribute-operator-space-after": "always"|"never",
"selector-attribute-operator-space-before": "always"|"never",
"selector-attribute-operator-whitelist": string|[],
"selector-attribute-quotes": "always"|"never",
"selector-class-pattern": string,
"selector-combinator-space-after": "always"|"never",
"selector-combinator-space-before": "always"|"never",
"selector-descendant-combinator-no-non-space": true,
"selector-id-pattern": string,
"selector-list-comma-newline-after": "always"|"always-multi-line"|"never-multi-line",
"selector-list-comma-newline-before": "always"|"always-multi-line"|"never-multi-line",
"selector-list-comma-space-after": "always"|"never"|"always-single-line"|"never-single-line",
"selector-list-comma-space-before": "always"|"never"|"always-single-line"|"never-single-line",
"selector-max-empty-lines": int,
"selector-max-compound-selectors": int,
"selector-max-specificity": string,
"selector-nested-pattern": string,
"selector-no-attribute": true,
"selector-no-combinator": true,
"selector-no-id": true,
"selector-no-qualifying-type": true,
"selector-no-type": true,
"selector-no-universal": true,
"selector-no-vendor-prefix": true,
"selector-pseudo-class-blacklist": string|[],
"selector-pseudo-class-case": "lower"|"upper",
"selector-pseudo-class-no-unknown": true,
"selector-pseudo-class-parentheses-space-inside": "always"|"never",
"selector-pseudo-class-whitelist": string|[],
"selector-pseudo-element-case": "lower"|"upper",
"selector-pseudo-element-colon-notation": "single"|"double",
"selector-pseudo-element-no-unknown": true,
"selector-type-case": "lower"|"upper",
"selector-type-no-unknown": true,
"shorthand-property-no-redundant-values": true,
"string-no-newline": true,
"string-quotes": "single"|"double",
"time-min-milliseconds": int,
"unit-blacklist": string|[],
"unit-case": "lower"|"upper",
"unit-no-unknown": true,
"unit-whitelist": string|[],
"value-keyword-case": "lower"|"upper",
"value-list-comma-newline-after": "always"|"always-multi-line"|"never-multi-line",
"value-list-comma-newline-before": "always"|"always-multi-line"|"never-multi-line",
"value-list-comma-space-after": "always"|"never"|"always-single-line"|"never-single-line",
"value-list-comma-space-before": "always"|"never"|"always-single-line"|"never-single-line",
"value-list-max-empty-lines": int,
"value-no-vendor-prefix": true
}
}