It is not always necessary to wrap font family names around quotes but it is safer.

## Noncompliant Code Example

    font-family: Arial, MS Trebuchet, sans-serif;

## Compliant Solution

    font-family: 'Arial', 'MS Trebuchet', sans-serif;

## Exceptions

Generic font family names (`serif`, `sans-serif`, `cursive`, `fantasy` and `monospace`) must not be quoted.

## See

- CSS Tricks - font-family
- Unquoted font family names in CSS

## stylelint Related Rules

- font-family-name-quotes