title: HTML tables not showing
body: <p>I'm currently learning HTML. I was trying to create a simple HTML document that displays a simple table, but I'm having troubles. My web browser (Mozilla Firefox) is not displaying the borders for the whole table. It looks like if it was a regular paragraph. </p>
  
  <p>Here is what I have</p>
  
  <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0//Strict//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11-strict.dtd"&gt;
  &lt;html&gt;
      &lt;head&gt;
          &lt;title&gt;My first web page&lt;/title&gt;
      &lt;/head&gt;
      &lt;body&gt;
          &lt;table&gt;
              &lt;tr&gt;
                  &lt;td&gt;1&lt;/td&gt;
                  &lt;td&gt;2&lt;/td&gt;
                  &lt;td&gt;3&lt;/td&gt;
              &lt;/tr&gt;
  
              &lt;tr&gt;
                  &lt;td&gt;4&lt;/td&gt;
                  &lt;td&gt;5&lt;/td&gt;
                  &lt;td&gt;6&lt;/td&gt;
  
              &lt;tr&gt;
                  &lt;td&gt;7&lt;/td&gt;
                  &lt;td&gt;8&lt;/td&gt;
                  &lt;td&gt;9&lt;/td&gt;
              &lt;tr/&gt;
  
              &lt;tr&gt;
                  &lt;td&gt;10&lt;/td&gt;
                  &lt;td&gt;11&lt;/td&gt;
                  &lt;td&gt;12&lt;/td&gt;
  
              &lt;/tr&gt;
          &lt;/table&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>