Conditional CSS

[3rd-Eden]

Stylus allows you to put conditional comments in your css. We should allow developers to use this functionality to create:

• CSS based on distribution type for example include debug css for the dev distribution so you can debug you CSS grids and styling for other debug markup that you might use.
• CSS for different platforms. Allow css that is specifically build for mobile devices to share the same code base.
• Maybe some more use cases.