I see that I can create my own jumbotron class and containers. So, it is still a bit confusing to me what bootstrap does/is.
But, onto another question or two:
1) I completed the HTML & CSS: Part I. I don't see a Part II. Am I missing something or is it just yet to be developed?
2) There is another course called HTML & CSS. It is unclear to me how this is different from the one that has "Part I" in its name. Is it just the case that two different people wrote courses covering similar topics?
3) Is there an App Development course?