Cabin CSS framework which comes with a super lightweight core and can be extended easily once needed. Cabin is a super light, super modular CSS framework that allows you to add extensions when you need them.
The core CSS file includes the styles that are needed by the majority of the websites: reset, typography and navigation.
Styles for grids (12 or 16, fixed and fluid), tables, forms, media queries or social media messages are all provided as extensions.

Official Words:
It’s no secret there are a bunch of CSS frameworks out there already, but many set styles in anticipationof you needing them, resulting in CSS bloat. Cabin allows you to choose how much support your framework provides.
With Cabin, you start with the core file and add extensions—CSS files with additional predefined styles—if and when you need them.
And, Cabin is compatible with all major browsers (by leaving IE6 in the past).
Requirements: No Requirements
Compatibility: All Major Browsers
Website: http://cabincss.com/
Download: https://github.com/cabincss