Bootstrap is a free, open source CSS and JS framework that helps you create websites in minutes, and Ruby on Rails, or Rails as it's known, is an open source web application framework written in the Ruby programming language. Bootstrap is typically used in Rails applications to design websites and create themes because it comes loaded with predesigned CSS and HTML templates.
The book starts by taking you through web application development in Rails. It teaches you how to set up the Bootstrap framework, and will showcase the true power of your Rails app using Bootstrap's grid system. You will learn about other Bootstrap components and move on to work with modals and carousels. It concludes with the opportunity to test your skills by creating a shopping cart using Bootstrap modals.