Sorry for the silly question but I've been looking around on the internet all afternoon with not much success due to the many many frameworks out there (too many). 

I am a java web developer who normally doesn't deal with CSS. At my company we have to support ie6 for some stupid reason. I'm looking for a css framework I can use that will get me up and running quickly with some buttons, menu's and layouts and I don't want to just dload any old web template. Would be nice if I took the opportunity to set up the css myself.

Can anyone suggest some good tools/frameworks that will get me up and running quickly? I can't use bootstrap because it does not look compatible with ie6.