How can i make the products extra fields look like that in product_info

[Guest]

Hello i would like to know how can i make the contribution Product extra Fields look as it looks like

in this web site http://www.oroloi.gr/product_info.php?products_id=1555

 

Do you know where i have to make the changes ? In which File?

[Guest]

i want the text of products extra fields contribution be align

and also i want a very smooth colour for backround

 

Any ideas?