title: CSS Fixed Header
body: <p>I am trying to fix my header on the top. I've looked at other posts and am sure that I'm doing it right. This is the CSS for the header: </p>
  
  <pre><code>.header{
      width: 100%;
      position:fixed;
      top: 0px;
  }
  </code></pre>
  
  <p>For some reason when I do this, the header disappears. Any ideas for why? And how should I change the code? 
  FYI I'm using bootstrap and adding this into it.</p>
  
  <p>Thanks a ton, Stefan</p>
  
  <p>After seeing so answer I made so edits, but it disappeared on me again. The CSS I am using is:</p>
  
  <pre><code>position: fixed; 
  width:960px;
  </code></pre>
  
  <p>Anymore help? Really appreciated.</p>