title: Is it possible to change CSS Validation scheme in VS2010
body: <p>I'm editing a simple CSS file in VS2010 and the editor seems to have a rather limited understanding of CSS, for example:</p>
  
  <pre><code>#my-rule {
       position:relative;
  }
  </code></pre>
  
  <p>generates a warning: <code>Validation(CSS 1.0): 'position' is not a known CSS property name</code> </p>
  
  <p>I'm guessing that there is an option some where to change the CSS validation to CSS 2.1 or some thing close, but can't for the life of me find it.</p>