Make wider left product details

[estaser]

Greetings, I am modifying my template virtuemart 2.0 but one thing that is not modified. Product in detail the left is very close strait as I have many attributes to choose (color) so that is very long, and very empty right side:

http://www.pelucashop.com/index.php/virtuemart/tipo-de-pelo/sintetico/alia-66-detail

As I can make wider the left and put the attributes in 3 columns? I hope your help. THANKS
Esther from Spain