I bet you have a style that you write CSS in, for the most part. You like 4-spaces, say. You always have a space after braces and colons. You always put a space after rulesets. You only ever put one declaration on a line, and the only declarations that can be multi-line are when they are big blocks like a gradient or a comma-separated box-shadow.
You might take this a little further and codify this. Perhaps you have a team meeting about it and decide on how you want to style code. You write up a guide and make it available for everybody on the team to see.