title: positiong DIV in ASPX file
body: <p>I'm going to make a big DIV centered horizontally in an ASPX file, I use following codes:</p>
  
  <pre><code>&lt;body bgcolor="#33CC33"&gt;
  &lt;form id="form1" runat="server"&gt;
  &lt;center&gt;
  &lt;div style="height:580px; width: 890px; top:0px; bottom:0px; background-color: #FFFFFF;"&gt;
  
  &lt;/div&gt;
  &lt;/center&gt;
  </code></pre>
  
  <p>it is positioned correctly, the only problem is that there is a small gap (about 10 pixels) between top of the screen and top edge of my DIV, but I want my DIV to start exactly from top edge of the browser screen, what is the problem?</p>
  
  <p>thanks</p>