title: Nested table alignment in with percentage width
body: <p>Here I have nested formatted table. each table row head have a same equal width of the nested table column width. If I added any padding or margin the table cell getting collapse. How to make each of the columns in the same equal width with changing.</p>
  
  <p>Here the code below:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>table {
    table-layout: fixed;
    border-collapse: collapse;
    width: 100%;
  }
  td,
  th {
    border: 1px solid #000;
    padding: 0;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;table&gt;
    &lt;tr&gt;
      &lt;th width="20%"&gt;Head1&lt;/th&gt;
      &lt;th width="20%"&gt;Head2&lt;/th&gt;
      &lt;th width="20%"&gt;Head3&lt;/th&gt;
      &lt;th width="20%"&gt;Head1&lt;/th&gt;
      &lt;th width="20%"&gt;Head2&lt;/th&gt;
    &lt;/tr&gt;
  &lt;/table&gt;
  &lt;table&gt;
    &lt;tr&gt;
      &lt;td colspan="5"&gt;
        &lt;table&gt;
          &lt;tr&gt;
            &lt;td&gt;data1&lt;/td&gt;
            &lt;td&gt;data2&lt;/td&gt;
            &lt;td&gt;equa3&lt;/td&gt;
            &lt;td&gt;data2&lt;/td&gt;
            &lt;td&gt;equa3&lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
            &lt;td colspan=5 "&gt;&lt;table&gt;
         &lt;tr&gt;
          &lt;td&gt;data1&lt;/td&gt;
        &lt;td&gt;data2&lt;/td&gt;
         &lt;td&gt;equa3&lt;/td&gt;
         &lt;td&gt;data2&lt;/td&gt;
        &lt;td&gt;equa3&lt;/td&gt;
       &lt;/tr&gt;
    
       &lt;/table&gt;&lt;/td&gt;&lt;/tr&gt;
       &lt;/table&gt;&lt;/td&gt;
       &lt;/tr&gt;
       &lt;/table&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Any suggestions:</p>