title: csslint Warning - The box-sizing property isn't supported in IE6 and IE7
body: <p>I am using CSSLint for the first time and trying it now. When I write following CSS</p>
  
  <pre><code>.div {
      box-sizing: border-box;
      border: 1px solid red;
      padding: 5px;
      width: 100px;
  }
  </code></pre>
  
  <p>Then when I run <code>Warning - The box-sizing property isn't supported in IE6 and IE7.</code></p>
  
  <p>I also changed <code>"box-sizing": false</code> to <code>"box-sizing": true</code> in my <code>.csslintrc</code> file. </p>
  
  <p>But I am still getting this warning. How can I solve this problem?</p>