Here are the images for the page.

1. Read the supplement on widths of web pages. For some reason, I made the page you see below 400 pixels wide. To get the same look you may do that as well. However, if you wish, you can make it 600 pixels wide.

2. Set the widths of the columns in pixels also. That way, you have precise control over the column widths. Just make sure that the column widths add up to the width of the whole table over any given horizontal line.

3. Remember that some browsers don't like to render empty table cells. If a colored cell is to be empty, just put some text in the cell that is the same color as the background.

Here is another picture of the tabular layout.