Profile: aesperon

how can I change the size of the logo?  I try here:

a.logo{background: url("images/logo.png") no-repeat scroll 0 0 transparent;display:block;width:300px;height:139px;text-decoration:none;}

I just see half of the logo.

Sorry, I didn't posted my question correctly initially. I need to modify the size of the fonts under the category section. For Example on the left panel after a select a category I need to increase the size of the fonts there.

Thanks

How can I change the size of the categories under the products in the Mega menu