Format CSS online
CSS or Cascading Style Sheets is a standard for formatting elements, that is used especially for the web, in conjuction with HTML. Usually, the webmasters minifies the style sheets files in order to gain perfomance in loading of the web pages because less data is transferred. When you have a problem with the CSS and you open a file, you will be lost! That's why you can use a CSS tool that can unminify your styles, doing the reverse of the uglify process.
This prettify tool can handle big bundle stylesheets