[ad_1] https://i.ytimg.com/vi/N8GksI_-iIM/hqdefault.jpg Before I create the new Bootstrap 4 crash course I want to go over some of the changes from Bootstrap 3. In this presentation we will talk about things like Bootstrap 4 using Sass over Less Improved Grid System The Use of Flexbox Design Changes Navbar ES6 For JavaScript Plugins And Much More……