.stylelintrc.json

{
    "extends" : [
        "stylelint-config-standard"
    ],
    "reportNeedlessDisables" : true,
    "rules"   : {
        "alpha-value-notation"             : "number",
        "at-rule-no-unknown"               : [true, { "ignoreAtRules" : ["define-mixin", "mixin"] }],
        "at-rule-empty-line-before"        : null,
        "block-opening-brace-space-before" : ["always", { "ignoreSelectors" : ["/^(?:\\d+%|to|from)$/"] }],
        "color-function-notation"          : "legacy",
        "comment-empty-line-before"        : null,
        "font-family-no-duplicate-names"   : [true, { "ignoreFontFamilyNames" : ["monospace"] }],
        "indentation"                      : "tab",
        "linebreaks"                       : "unix",
        "max-empty-lines"                  : 2,
        "no-descending-specificity"        : null,
        "rule-empty-line-before"           : null,
        "selector-class-pattern"           : "^([a-z][a-z0-9]*)(-[a-z0-9]+)*$"
    }
}