Duplicated font family names in a `font-family` property value are either:

- Useless and the duplicated font family names can be safely removed
- Or it is the result of a bad copy/paste and the duplicated font family names should be replaced with the intended ones

## Noncompliant Code Example

    .mybox {
      font-family: 'Arial', 'MS Trebuchet', 'Arial', sans-serif;
    }

## Compliant Solution

    .mybox {
      font-family: 'Arial', 'MS Trebuchet', sans-serif;
    }

## stylelint Related Rules

- font-family-no-duplicate-names