To do that I need an additional box wrapping these 3 columns. This box is placed inside the existing 'darkhalf' id, it's like
In the footer.php the new class is added
Now below is the modified CSS for the columns
margin:0 1% 0 1%;
margin:0 0% 0 0%;
Note that all of them are 'floated' left whereas in the last design I have the right column floated right. The trick is the 'min-width' and 'max-width' of the class 'inside'. This allows the middle and right columns to expand to the right while you drag the browser edge to the right. The left column which I have put static information is left more or less unchanged visually due to its relatively smaller % (23 vs 32+32) even if broswer is dragged.
This is a much better design originally found in the famous WP theme Hemingway.