HTML5+CSS3 Framework like BluePrint/960gs?

You can use the BluePrint/960gs framework or any of the following −

• 52framework
• Susy        

52framework (Refer)

The framework that provides −

• CSS3 gradients, multiple shadows, and other amazing properties.
• CSS3 selectors with support for IE.
• New and improved HTML5 video support with vimeo like skin
• A completely new Form Framework with HTML5 Validation (via javascript)

Susy (Refer)

A lightweight grid-layout framework for Sass. This is designed to clarify responsive grid layouts. Use Susy with floats, flexbox, tables, etc.