I have three Superfish specific css files that I have had to work with. Since there are now quite a few css files in the subtheme, I have created a subfolder for the superfish ones to go into. This is really important because one of them has the great name, default.css. so it needs to go into a sf specific home. here is a SS:
Make sure to change the .info file to reflect the new folder. Something like, /css/superfish/*.css
landie.tech 