[Plugin: WordPress-Amazon-Associate] Wider quicklinks

In the screenshots part of the plugin description there is an image for the quick links component which shows a link in banner a kind of banner format which I’d like to use on my site but when I try to use the quick links component I get a link in a small box like the one shown here http://www.slightlyburnt.co.uk/2012/08/27/oxo-good-grips-measuring-spoons/

How can I make this box wider like the one shown?

Thank you,

Dan.

http://wordpress.org/extend/plugins/wordpress-amazon-associate/