In this book, you will explore the use of Bootstrap, by far the most popular front-end web development framework, in responsive web design. Instead of manhandling HTML5 and CSS3, you will simply acquire the essential components from Bootstrap and assemble them into your web page to make it responsive to different screen sizes according to your design and requirements. The essential components that you need to acquire from Bootstrap for this purpose are container, grid, and navigation bar. This book explains in detail the behaviour and characteristics of these components and their usages reinforced with many examples, illustrations, and exercises. Once you are acquainted yourself with these components, this book will guide you through a hands-on session of assembling these components into a web page to make it into a responsive one. If you wish to receive a copy of the source code, please contact me via the email address inside this book with proof of purchase.