title: How do I use rowspan to cover 1.5 times the cell?
body: <p>This code does not make the last 2 cells cover the 3 three rows.
  How should I fix it?<br>
  Here's the code:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>        &lt;table border="2"&gt;
     &lt;tr&gt;
      &lt;th rowspan="3"&gt;Day&lt;/th&gt;
      &lt;th colspan="3"&gt;Seminar&lt;/th&gt;
     &lt;/tr&gt;
     &lt;tr&gt;
      &lt;th colspan="2"&gt;Schedule&lt;/th&gt;
      &lt;th rowspan="2"&gt;Topic&lt;/th&gt;
     &lt;/tr&gt;
     &lt;tr&gt;&lt;th&gt;Begin&lt;/th&gt;&lt;th&gt;End&lt;/th&gt;&lt;/tr&gt;
     &lt;tr&gt;
      &lt;td rowspan="2"&gt;Monday&lt;/td&gt;
      &lt;td rowspan="2"&gt;8:00 a.m.&lt;/td&gt;
      &lt;td rowspan="2"&gt;5:00 p.m.&lt;/td&gt;
      &lt;td&gt;Introduction to XML&lt;/td&gt;
     &lt;/tr&gt;
     &lt;tr&gt;&lt;td&gt;Validity:DTD and Relax NG&lt;/td&gt;&lt;/tr&gt;
     &lt;tr&gt;
      &lt;td rowspan="3"&gt;Tuesday&lt;/td&gt;
      &lt;td&gt;8:00 a.m.&lt;/td&gt;
      &lt;td&gt;11:00 a.m.&lt;/td&gt;
      &lt;td rowspan="1.5"&gt;XPath&lt;/td&gt;
     &lt;/tr&gt;
     &lt;tr&gt;
      &lt;td&gt;11 a.m.&lt;/td&gt;
      &lt;td&gt;2:00 p.m.&lt;/td&gt;
     &lt;/tr&gt;
     &lt;tr&gt;
      &lt;td&gt;2:00 p.m.&lt;/td&gt;
      &lt;td&gt;5:00 p.m.&lt;/td&gt;
      &lt;td rowspan="1.5"&gt;XSL Transformations&lt;/td&gt;
     &lt;/tr&gt;
    &lt;/table&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>The rowspan doesn't allow 1.5. How can I do it without doubling all the rows and columns?</p>