Blueprint is a CSS framework designed to reduce development time and ensure cross-browser compatibility when working with Cascading Style Sheets (CSS). It also serves as a foundation for many tools designed to make learning easier and more accessible to beginners. Blueprint is released under a modified version of the MIT License , making it free software . It can be used as a tool or is written in Ruby .
Blueprint’s README file lists the following features as being provided out-of-the-box:
- An easily customizable grid
- Sensible default typography
- A typographic baseline
- Perfected browser CSS reset
- A stylesheet for printing
- Powerful scripts for customization
- Bloat Minimized as much as possible
Blueprint Was first created by Olav Bjørkøy and released on August 3, 2007.  By August 11, Blueprint included work is based ideas from Jeff Croft, Nathan Borror Christian Metts, and Eric Meyer .  Version 0.8 was released on November 11, and included various bugfixes as well as a new “tabs” plugin. 
Blueprint for a foundation for other projects
One of the goals of the team is to facilitate the development of new tools for working with CSS.  A variety of CSS generators, visual editors , themes , and frameworks are based on Blueprint, many of which can be found on the Blueprint Wiki . 
- Jump up^ Launch: Blueprint, has CSS framework. bjorkoy.com (2007-8-3).
- Jump up^ CSS Frameworks for Front-end Developers. byteswire.com. Retrieved on 2014-09-01
- Jump up^ Blueprint version 0.8. (Archived) Christianmontoya.com. Retrieved on 2012-09-11.
- Jump up^ Semantify, and CSS based tools on Blueprint ArchivedJanuary 16, 2009, at theWayback Machine.. Christianmontoya.com. Retrieved on 2012-09-11.
- Jump up^ Mods, Forks and Alternatives. Wiki.github.com (2012-03-31). Retrieved on 2012-09-11.