How to View Online CSS3
Once you’ve found the CSS3 online, you’ll want to view it. In at least some cases, the CSS will use plenty of white space and could include comments. For example, when you view the standard version of jquery-ui.css, you see a fully commented file with plenty of white space.
The idea is to become thoroughly familiar with whatever code you’re working with before you make any decisions about modifications or tweaks. In addition, you need to be able to talk with anyone who knows more about the file in an intelligible manner.