Is bootstrap a library?

Related questions

1. Why bootstrap is called framework?
2. What are bootstrap Mixins?
3. What is bootstrap and AngularJS?
4. Is bootstrap a programming language?
5. Is bootstrap using jquery?
6. Is Bootstrap 3 backwards compatible?
7. What is container bootstrap?
8. Why bootstrap is used?
9. Is CSS grid better than bootstrap?
10. What is bootstrap operating system?

Tags

1. #buttons
2. #design
3. #first
4. #optionally
5. #forms
6. #based
7. #directed
8. #source
9. #front
10. #framework
11. #components
12. #responsive
13. #development
14. #typography
15. #bootstrap
16. #other
17. #interface
18. #contains
19. #javascript
20. #templates
21. #mobile
22. #navigation