CSS Beautify automatically formats your style to be consistent and easy to read.  It is an online tool, with a simple user interface, with real-time formatting done, as you type your CSS code.  CSS Beautify can also format CSS3 code easily.  Features:

• Only one blank line between two rulesets
• Closed curly brace is at its own line
• There is no empty line between declarations inside a ruleset
• No space between the property name and colon
• One space between colon and the property value
• Comments are preserved

Requirements: None
Demo:  http:/ / cssbeautify. com/
License: MIT License