title: How to suppress specific CSS 2.0 validation errors in Visual Studio 2008?
body: <p>A typical CSS property that I use often is <code>overflow-x</code> or <code>overflow-y</code>. Sometimes I use CSS 2.1 or later properties or selectors. These (correctly) raise a validation error:</p>
  
  <blockquote>
    <p><code>Validation (CSS 2.0): 'overflow-y' is not a known CSS property name.</code></p>
  </blockquote>
  
  <p>For years I ignored this, but it kinda feels wrong. It's possible to switch off warnings in C# and other languages for a particular line, block, file or project. Is something similar possible for CSS (or HTML) errors or warnings? Instead of switching it all off, I prefer a more granular solution.</p>