Submodule 3.3: Responsive Design and Bootstrap Grid System

Introduction

In this submodule, you will be given an overview of responsive web design and an introduction to the Bootstrap grid system.

• Part 1 introduces you to responsive design and Bootstrap support for mobile first responsive design through the use of the grid system. 
• We also learn, in Part 2,  how to customize some of the Bootstrap classes by defining our own modifications in a separate CSS file.