s-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">include</span><span class="hljs-preprocessor"> prefixer</span>(transition, $property,<span class="hljs-preprocessor"> webkit</span><span class="hljs-preprocessor"> moz</span><span class="hljs-preprocessor"> ms</span>);</span>
  } <span class="hljs-at_rule">@<span class="hljs-keyword">else</span