title: how to remove the space in the top e in the bottom of a page?
body: <p>I have this classic container:</p>
  
  <pre><code>.container { width: 910px;
               margin-left: auto;
               margin-right: auto;
               position: relative; 
               background-image:url(../images/background.png);
               background-repeat:repeat-y; }
  </code></pre>
  
  <p>but it creates a small space (like 5, 10 px) in the top and in the bottom of the page.</p>
  
  <p>Why? And how can I fix it?</p>