r"> type-of</span>($prefixes) == <span class="hljs-string">"string"</span> {</span>
    $valid<span class="hljs-value">: true;</span>
  }
  <span class="hljs-at_rule">@<span class="hljs-keyword">if</span> $valid ==<span class="hljs-preprocessor"> true</span> {</span>
    <span class="hljs-at_rule">@<span class="hljs-keyword">each</span> $prefix<span class="hljs-preprocessor"> in</span> $prefixes {</span>
      #{"-" + $prefix + "-" + $property}<span class="hljs-value">: $value;</span>
    }
    #{$property}