title: How to let css selector exclude an element?
body: <p>For example I have a css style like this :</p>
  
  <pre><code>    input.validation-passed {border: 1px solid #00CC00; color : #000;}
  </code></pre>
  
  <p>The javascript validation framework I use will inject every input tag with a class="validation-passed" .For the elements like <code>&lt;input type='text' /&gt;</code> ... , this is ok , but for <code>&lt;input type='button' /&gt;</code> , I want this is not applied , how should I do this ? </p>