help with updating css

Greetings!

Have new 3.4 site and need to update Themes/DefaultClean/Content/styles.css.

I downloaded and made my changes - colors and background image changes.

Uploaded and nothing changed.  I cleared cache as well.

Thanks
Tomi

Found it!

Under
General and miscellaneous settings

CSS bundling and minification: check box

Then it works.

ooh thank you, I looking for this solution too,
http://stand-studio.com