Hello,
1) Jumbotron indicates a big box for calling more Attention to important Content or Information.
2) In bootstrap, Jumbotron usually used for content that you want to highlight like some motto, slogan, or marketing headline, etc.
3) It is used to increase the size of the headings and to add a border for landing page content.
4) You can put almost any valid HTML inside a Jumbotron, including other Bootstrap elements or classes.
5) To use the Jumbotron in Bootstrap. Create a container <div> with the class of .jumbotron