HTML Table, first and last column fixed width and columns between dynamic, but equal width

Try this:

As you can see the two centre column remain equal sized, due to the table-layout:fixed, even when the content is of different length. Try adding more and less content to the two centre columns.

JSFiddle: http://jsfiddle.net/RtXSh/

CSS

table {
    width:100%;
    border-collapse:collapse;
    table-layout:fixed; 
}

td {
    border: 1px solid #333;
}

HTML

  <table>
    <tr>
      <td style="width:300px;">
        test
      </td>
      <td>
        test test tes test test
      </td>
      <td>
        test
      </td>
      <td style="width:50px;">
        test
      </td>
    </tr>
  </table>

Try using the pseudo element first-child and last-child

If I'm not mistaken the other columns will align equally by themselves. You might need to use the !important statement behind the first-child and last-child widths.

table{ table-layout: fixed; width: 100%; }
td { border: 1px solid black; }
td:first-child{ width: 100px; }
td:last-child{ width: 100px; }

<table>
    <tr>
      <td>100px</td>
      <td>some text</td>
      <td>some text</td>
      <td>100px</td>
    </tr>
</table>

However, as nurettin pointed out, if you use a thead and tbody section you have to style the header. Styling the td:first-child and td:last-child will not work.

table{ table-layout: fixed; width: 100%; }
td { border: 1px solid black; }
th:first-child{ width: 100px; }
th:last-child{ width: 100px; }

<table>
  <thead>
    <tr>
      <th>Column 1</th>
      <th>Column 2</th>
      <th>Column 3</th>
      <th>Column 4</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>100px</td>
      <td>some text</td>
      <td>some text</td>
      <td>100px</td>
    </tr>
  </tbody>
</table>