Change thumb size in Toys template

Hi,
I'm new to this script and I'm making some test.
I like the default template, but using mochi game that have a 100x100 pixel thumb I want to change the rectangular thumb. I've changed the css, but seem the thumbs not change... maybe I need to make something else?

No, you don't need to change anything except CSS. I'd suggest you to install FireBug - a little but extremely handy addon for FireFox, and look at your page through that addon (Ctrl-Shift-C)

With firebug you can also change your css and test the changes "on the fly" (firebug can't save them though)

Thanks for the prompt reply.
I will test with FireBug and if I've problem will post here.