title: Why doesn't CssClass work when a regular class does?
body: <p>In my CSS file I have:</p>
  
  <pre><code>.Center
  {
      position:relative;
      width:800px;
      margin-left: auto;
      margin-right: auto;
  }
  </code></pre>
  
  <p>Then, when I have the following all is well:</p>
  
  <pre><code>&lt;div class="Center"&gt;
      &lt;asp:ImageButton ID="ImageButton1" ImageUrl="..." runat="server" /&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>But if I remove the <code>div</code> and add a <code>CssClass</code> instead - it ignores the class:</p>
  
  <pre><code>&lt;asp:ImageButton ID="ImageButton1" ImageUrl="..." runat="server" CssClass="Center" /&gt;
  </code></pre>
  
  <p>Why?</p>