https://i.ytimg.com/vi/PmJTLCx0GRI/hqdefault.jpg

In this tutorial, I’ll show you how to use Bootstrap’s layout grid. We’ll start by installing the bootstrap framework onto an existing site through CDNs and then I’ll walk you through adding a two column grid. Plus, we’ll talk about the importance of the container class to fine tune your layouts. Then, I’ll show you how to convert an existing navigation using Bootstrap’s nav classes and how to create a simple Jumbotron.

source