, which warns when a vendor-prefixed property is used.</p>

<p>In addition to checking the property name, this rule also checks the property value against the property name to ensure proper values are being supplied. Not all properties are supported yet, but a large number are.</p>

<p>The following patterns are considered warnings:</p>

<div class="highlight highlight-source-css"><pre><span class="pl-c">/* clr isn't a known property */</span><br/><span class="pl-ent">a</span> {<br/>    <span class="pl-c1">