Drupal Bootstrap 4
Drupal Bootstrap refers to the Drupal base theme project. Bootstrap Framework refers to the external front end framework. Drupalbootstrap refers to Drupal's bootstrapping process or phase. When referring to files inside the Drupal Bootstrap project directory, they will always start with./themes/bootstrap and continue to specify the full. See full list on drupal.org.
Bootstrap 4 is the newest version of Bootstrap, which is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first websites.
The Bootstrap is probably the world's most popular framework for building responsive, mobile-first sites. It allows you to design lightweight and modern UI for your website quickly. In the blog post, we'll discuss the ways to integrate Drupal 8+ with this beautiful toolkit.
Bootstrap Barrio
Bootstrap 4 is completely free to download and use!
Try it Yourself Examples
This Bootstrap 4 tutorial contains hundreds of Bootstrap 4 examples.
With our online editor, you can edit the code, and click on a button to view the result.
Bootstrap 4 Example
<h1>My First Bootstrap Page</h1>
<p>Resize this responsive page to see the effect!</p>
</div>
<div>
<div>
<div>
<h3>Column 1</h3>
<p>Lorem ipsum dolor..</p>
</div>
<div>
<h3>Column 2</h3>
<p>Lorem ipsum dolor..</p>
</div>
<div>
<h3>Column 3</h3>
<p>Lorem ipsum dolor..</p>
</div>
</div>
</div>
Click on the 'Try it Yourself' button to see how it works.
Bootstrap 3 vs. Bootstrap 4
Drupal 8 Bootstrap 4 Themes Free
Bootstrap 4 is the newest version of Bootstrap; with new components, faster stylesheet and more responsiveness.
Bootstrap 4 supports the latest, stable releases of all major browsers and platforms. However, Internet Explorer 9 and down is not supported.
If you require IE8-9 support, use Bootstrap 3. It is the most stable version of Bootstrap, and it is still supported by the team for critical bugfixes and documentation changes. However, new features will NOT be added to it.
Go To Bootstrap 3 »Bootstrap 4 Basic Template
We have created a responsive starter template with Bootstrap 4. You are free to modify, save, share, and use it in your projects:
Bootstrap References
A complete list of all Bootstrap 4 CSS classes with description and examples:
If you want to do more with Bootstrap components, see our complete Bootstrap 4 JavaScript/jQuery reference - all with 'Try it Yourself' examples:
Bootstrap 4 Exercises
Bootstrap 4 Quiz Test

Test your Bootstrap 4 skills at W3Schools!
Did You Know?
W3.CSS is an excellent alternative to Bootstrap 4.
W3.CSS is smaller, faster, and easier to use.
If you want to learn W3.CSS, go to our W3.CSS Tutorial.