Bootstrap 5 · Complete Question Bank

All Bootstrap 5 Interview Questions

Practice the complete collection of Bootstrap 5 interview questions including theory, coding, MCQs and real interview problems.

Total Questions: 60Topics: 23Complete interview preparation

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All Bootstrap 5 Interview Questions (60)

Scroll through every important Bootstrap 5 question asked in real interviews. Includes MCQs, subjective questions, and coding prompts.

1. What is Bootstrap mainly used for?

Difficulty: EasyType: MCQTopic: setup

Back-end development
Responsive front-end design
Database management
Server deployment

Bootstrap is a front-end framework for building responsive and mobile-first websites quickly. It provides ready CSS and JavaScript components for layout and UI design.

Correct Answer: Responsive front-end design

2. Which version of Bootstrap dropped support for jQuery?

Difficulty: EasyType: MCQTopic: version

Bootstrap 3
Bootstrap 4
Bootstrap 5
Bootstrap 6

Bootstrap 5 removed the jQuery dependency and replaced it with vanilla JavaScript for faster and lighter performance.

Correct Answer: Bootstrap 5

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All Bootstrap 5 Interview Questions

Overview

1. What is Bootstrap mainly used for?

2. Which version of Bootstrap dropped support for jQuery?

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3. Which tag is used to link the Bootstrap CSS file from CDN?

4. Which class provides a responsive fixed width container in Bootstrap 5?

5. How many columns does the Bootstrap grid system use?

6. Which breakpoint in Bootstrap 5 targets large devices like desktops?

7. Which class creates a primary styled button in Bootstrap 5?

8. Which utility class adds margin at the top of an element in Bootstrap 5?

9. Does Bootstrap 5 include icons by default?

10. Which class is used to create a responsive navigation bar in Bootstrap 5?

11. How do you include Bootstrap 5 in a project using CDN and why is it useful?

12. What does 'mobile-first' mean in Bootstrap?

13. Explain the difference between .container and .container-fluid classes.

14. How does the grid system work in Bootstrap 5?

15. What are some key differences between Bootstrap 4 and 5?

16. How many total columns are available in Bootstrap’s grid system?

17. Which class must wrap all rows in a Bootstrap grid?

18. Which class represents a horizontal group of columns?

19. What will happen if you add more than 12 columns in a single row?

20. Which class makes a column take half width on medium devices?

21. What does the class .col without a number mean?

22. How can you nest a grid inside another grid?

23. Which class is used to shift columns to the right in Bootstrap?

24. Which class vertically centers columns inside a row using flexbox?

25. How can you change the order of columns on different screen sizes?

26. Explain the use of the row-cols utility in Bootstrap 5.

27. List all Bootstrap 5 responsive breakpoints with their widths.

28. Describe the difference between .container and .container-fluid in layout building.

29. How do you properly nest a grid and why is nesting important?

30. Explain horizontal and vertical alignment options for Bootstrap grids.

31. Which class applies the H1 heading style to any element?

32. Which class gives you the largest hero style heading?

33. Which class is used to style an introductory paragraph?

34. Which class sets a subtle, de-emphasized text color?

35. Which utility adds vertical padding of size 3?

36. How do you center a fixed-width block horizontally?

37. Which class prevents text from wrapping to the next line?

38. Which utility hides content visually but keeps it available to screen readers?

39. Which utility hides an element on all screen sizes?

40. When should you use .h1 versus real <h1> and when would you use .display-1?

41. What are utility classes in Bootstrap and why are they popular?

42. Explain the spacing scale (0–5) and how responsive spacing works.

43. How do you truncate long text with ellipsis correctly?

44. When would you use .text-reset and .text-decoration-none on links?

45. Compare .d-none, .invisible, and .visually-hidden. When do you use each?

46. Which data attribute toggles a collapsible element in Bootstrap 5?

47. Which class makes the navbar expand at large screens and collapse below that?

48. Which attribute connects a button to a modal by its id?

49. Which class wraps the dropdown menu items?

50. Which attribute closes a modal when the button is clicked?

51. Which attribute marks an element as a tooltip trigger in Bootstrap 5?

52. Which attribute starts a carousel cycling automatically?

53. Which base class creates an offcanvas panel?

54. Which library does Bootstrap 5 use for dropdown and tooltip positioning?

55. Describe how to build a responsive navbar that collapses into a toggler on mobile.

56. When should you use a modal versus an offcanvas in Bootstrap 5?

57. How do you properly enable tooltips and keep them accessible?

58. Explain when to use toasts versus alerts, and how to place toasts on a page.

59. What are best practices for a carousel in terms of performance and accessibility?

60. How do you ensure a dropdown is keyboard friendly and screen reader friendly?

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