I submitted my homework. I am not thrilled with my work. I spent many hours trying hacking away at the Bootstrap-Portfolio trying to format it to spec. My biggest isssue is that the breakpoints in our spec are not the same as the breakpoints that Bootstrap 4 uses. The easiest way to have fixed this would have been to customized my own downloaded version of Bootstrap by using Sass, which is something that seemed overly complicated at the time. What I wound up doing was implementing media queries, something I did not initially want to implement, since it seems counter to the point of using Bootstrap.
In the end, I did learn a lot about Bootstrap, by trying to brute force it to shoehorn my spec onto it.