Learning about Bootstarap

[debashree-cribello]

• [x] Alerts
• [x] Badge
• [x] Breadcrumb
• [x] Buttons
• [x] Buttton groups
• [x] Card
• [x] Carousel
• [x] Collapse
• [x] Dropdowns
• [x] Forms
• [x] Input group
• [x] jumbotron
• [x] List group
• [x] Modal
• [x] Navs
• [x] Navbars
• [x] Paginations
• [x] Popovers
• [x] Progress
• [x] Scrollspy
• [x] Tooltips