Bootstrap is an open source or Cascading Style Sheets framework from Twitter that is extensively used for front-end prototyping as well as building various mobile friendly, robust websites that ...

Major upgrade to popular web framework introduces CSS variables for all components and improves helpers and utilities for fonts and colors.

With this kit, you'll get more than 50 useful Bootstrap templates to incorporate into your site, making it significantly easier to build than it would be if you started from scratch.