CSScomb is a coding style formatter for CSS.
You can easily write your own configuration to make your stylesheets beautiful
and consistent.
You need Node.js to make this plugin work.
If node has been installed with NVM you need to make a symlink to node in /usr/local/bin. Using OS X, the binary path would typically be /Users/[your name]/.nvm/[node version]/bin/node.
Press ctrl+shift+c or open "Tools" menu and select "Run CSScomb".
Custom configuration is fun and simple: just put .csscomb.json file in the
project root or your HOME directory.
You can read more about available options in docs.
You can also store config right in ST's settings.
Open Preferences > Package Settings > CSScomb and see Settings - Default
for an example.