Bootstrap Interview Questions and Answers in 2025 (100+ Q&A)

Bootstrap

Ques:- How to create a menu using navbar-inverse in Bootstrap?

Asked In :- Twilio, xebia, iopex technologies,

Right Answer:
To create a menu using `navbar-inverse` in Bootstrap, you can use the following HTML structure:

```html
<nav class="navbar navbar-inverse">
<div class="container-fluid">
<div class="navbar-header">
<a class="navbar-brand" href="#">Brand</a>
</div>
<ul class="nav navbar-nav">
<li class="active"><a href="#">Home</a></li>
<li><a href="#">About</a></li>
<li><a href="#">Services</a></li>
<li><a href="#">Contact</a></li>
</ul>
</div>
</nav>
```

Bootstrap

Ques:- What is progress bar in Bootstrap ?

Asked In :- Webtech Developers, pragma edge inc,

Right Answer:
A progress bar in Bootstrap is a component that visually represents the progression of a task or process, typically displayed as a horizontal bar that fills up to indicate completion. It can show different states like success, warning, or danger, and can be customized in terms of width and color.

Bootstrap

Ques:- Can you explain the right way to order the columns when using Bootstrap?

Asked In :- Angular Minds, xebia,

Right Answer:
In Bootstrap, you should order columns using the grid system by applying the appropriate classes for the desired layout. Use `.row` to create a row and then use `.col-*` classes (like `.col-4`, `.col-md-6`, etc.) to define the width of each column. To reorder columns, you can use the `.order-*` classes (like `.order-1`, `.order-2`, etc.) to specify the order in which they appear.

Bootstrap

Ques:- What are Bootstrap’s responsive utility classes?

Asked In :-

Right Answer:

Bootstrap's responsive utility classes are a set of classes that allow you to show or hide elements based on the screen size. They include classes like `.d-none`, `.d-sm-block`, `.d-md-none`, `.d-lg-flex`, and `.d-xl-inline`, which control the display property of elements at different breakpoints (extra small, small, medium, large, and extra large).

Bootstrap

Ques:- Do you know what is typography and the links that are present in the Bootstrap ?

Asked In :- Angular Minds, webgrity,

Right Answer:
Typography in Bootstrap refers to the styles and formatting applied to text elements, including headings, paragraphs, lists, and more, to ensure readability and visual hierarchy. Bootstrap provides predefined classes for typography, such as `.h1`, `.h2`, `.lead`, and `.text-*` for color and alignment. Additionally, Bootstrap includes links for styling anchor tags, such as `.link-primary`, `.link-secondary`, and hover effects.

Bootstrap

Ques:- What is Fluid Layout in Bootstrap?

Asked In :- brainstorm force,

Right Answer:
A Fluid Layout in Bootstrap is a responsive design approach where the width of the layout elements is set in percentages rather than fixed pixel values, allowing the content to adapt and resize according to the screen size or viewport.

Bootstrap

Ques:- What are Bootstrap Alerts ?

Asked In :- Vanilla Networks, Webtech Developers, iopex technologies, webgrity, brainstorm force,

Right Answer:
Bootstrap Alerts are a component used to display important messages or notifications to users. They can convey different types of information, such as success, error, warning, or info, and are styled with specific classes to indicate their purpose. Alerts can also be dismissible, allowing users to close them.

Bootstrap

Ques:- What are Bootstrap Form Rules?

Asked In :- Webtech Developers, Unvired, brainstorm force,

Right Answer:
Bootstrap Form Rules refer to the guidelines and best practices for using Bootstrap's form components effectively. These include using the appropriate classes for layout (like `.form-group`, `.form-control`), ensuring proper alignment and spacing, utilizing validation classes for feedback (like `.is-valid`, `.is-invalid`), and following responsive design principles to ensure forms look good on all devices.

Bootstrap

Ques:- What is Kickstrap?

Asked In :- MAXVY, ManekTech - Ahmedabad,

Right Answer:
Kickstrap is a front-end framework that combines Bootstrap with additional features and components specifically designed for building responsive web applications quickly and easily.

Bootstrap

Ques:- What is Bootstrap thumbnails?

Asked In :- Twilio,

Right Answer:
Bootstrap thumbnails are a component used to display a group of images or content in a grid format, typically with captions, to create a visually appealing layout. They are often used for showcasing images, videos, or other media in a compact and organized manner.

Bootstrap

Ques:- What is Bootstrap Breadcrumb?

Asked In :- Angular Minds, Webtech Developers, vanenburg software,

Right Answer:
Bootstrap Breadcrumb is a navigation component that displays the user's current location within a website's hierarchy, typically as a series of links separated by a greater-than symbol (">"). It helps users understand their position in the site structure and allows easy navigation back to previous pages.

Bootstrap

Ques:- What Is Button Group?

Asked In :-

Right Answer:
A button group in Bootstrap is a set of buttons that are grouped together to provide a unified action or functionality, typically styled to appear as a single button.

Bootstrap

Ques:- Which Class Is Used For Basic Button Group?

Asked In :- TechRAQ Info Solutions, webgrity, pragma edge inc,

Right Answer:
The class used for a basic button group in Bootstrap is `btn-group`.

Bootstrap

Ques:- What Is A Modal Plugin?

Asked In :- Vanilla Networks,

Right Answer:
A modal plugin in Bootstrap is a component that creates a dialog box or popup window that overlays the main content of the page, allowing users to interact with it without leaving the current page.

Bootstrap

Ques:- What Is Lead Body Copy?

Asked In :-

Right Answer:
Lead body copy refers to the introductory text or main content in a marketing piece that captures the reader's attention and encourages them to continue reading.

Bootstrap

Ques:- What Do You Understand By A List Group In Bootstrap And Its Use?

Asked In :- PrimeSoft Solutions, xebia,

Right Answer:
A list group in Bootstrap is a component that allows you to create a series of related items in a vertical list format. It is used to display a list of links, text, or other content in a structured way, often with options for styling, active states, and contextual classes for different visual emphasis.

Bootstrap

Ques:- Who Developed The Bootstrap?

Asked In :-

Right Answer:
Bootstrap was developed by Mark Otto and Jacob Thornton at Twitter.

Bootstrap

Ques:- How can we create a dropdown menu in Bootstrap?

Asked In :- MAXVY, brainstorm force,

Right Answer:
To create a dropdown menu in Bootstrap, use the following HTML structure:

```html
<div class="dropdown">
<button class="btn btn-secondary dropdown-toggle" type="button" id="dropdownMenuButton" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown button
</button>
<div class="dropdown-menu" aria-labelledby="dropdownMenuButton">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</div>
```

Make sure to include Bootstrap's CSS and JS files in your project.

Bootstrap

Ques:- How can you create Fixed Layout with Bootstrap?

Asked In :-

Right Answer:
To create a fixed layout with Bootstrap, you can use the `.container` class for a fixed-width layout. Additionally, you can use the `.row` and `.col-*` classes to structure your content within the fixed container. Here's a simple example:

```html
<div class="container">
<div class="row">
<div class="col-md-4">Column 1</div>
<div class="col-md-4">Column 2</div>
<div class="col-md-4">Column 3</div>
</div>
</div>
```

Bootstrap

Ques:- How can you create a web page using Bootstrap?

Asked In :- ManekTech - Ahmedabad,

Right Answer:
To create a web page using Bootstrap, include the Bootstrap CSS and JS files in the `<head>` section of your HTML document. Then, use Bootstrap's grid system and components to structure your content. For example:

```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css" rel="stylesheet">
<title>My Bootstrap Page</title>
</head>
<body>
<div class="container">
<h1 class="text-center">Welcome to My Bootstrap Page</h1>
<div class="row">
<div class="col-md-6">Column 1</div>
<div class="col-md-6">Column 2</div>
</div>
</div>

The “Bootstrap” category refers to the study and application of the world’s most popular front-end framework for web development. Bootstrap is a powerful, open-source toolkit that streamlines the process of creating responsive and mobile-first websites. By providing a standardized collection of reusable components and a robust grid system, it enables developers and designers to build professional-looking websites efficiently and consistently across all major browsers and devices.

The core of Bootstrap’s functionality revolves around several key features:

Responsive Grid System: This is arguably Bootstrap’s most famous and essential feature. The framework’s 12-column responsive grid system allows developers to create complex layouts that automatically adjust to different screen sizes, from large desktop monitors to small mobile phones. This “mobile-first” approach ensures that websites are optimized for smaller screens from the start.
CSS and JavaScript Components: Bootstrap offers a vast library of pre-designed, ready-to-use components. These include common UI elements such as navigation bars, buttons, dropdowns, forms, alerts, and modal windows. These components are styled with CSS and often include interactive functionality powered by JavaScript, saving developers significant time and effort in coding from scratch.
Customization: While Bootstrap provides a default design, it is highly customizable. The framework is built with Sass, allowing developers to easily modify colors, fonts, and other design variables to match a specific brand identity without having to override the core CSS files.

The advantages of using Bootstrap are numerous. It accelerates the development process, ensures a consistent user experience, and helps a wide range of websites to be accessible and functional on any device. Its clear documentation and large community make it an excellent choice for both beginners learning to code and seasoned developers building large-scale applications. In essence, Bootstrap acts as a foundational blueprint, democratizing web design and allowing creators to focus on the unique content and functionality of their websites.

Questions in: Bootstrap

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