Hi- I hope somebody can help me with this--

I'm trying to update a css file on a server that was set up to use the asset pipeline.

I updated some files in my app/assets/stylesheets directory. I really don't have any experience using this so I looked up what I might try to do to make these changes live and found a couple commands which seemed simple enough to try:

rake assets:clean
rake assetsrecompile

Well, doing that removed all the files in my public/assets and the second command only seemed to include the images from my assets folder. Why won't precompile include any files from the app/assets/javascripts or app/assets/stylesheets?

Can someone help me- I really don't know what I'm doing
Any responses are appreciated.
Thanks