Bootstrap is a popular front-end framework for building responsive mobile-first websites and web apps. It was created in 2011 by developers at Twitter and contains pre-built UI components and CSS styles for common patterns like navigation bars, dropdowns, and progress bars. Bootstrap uses a responsive 12-column grid system and has gone through several major releases to support new features and a mobile-first approach. It is free to use, well-documented, customizable, and has a large community of developers.

2. Jubair Ahmed Junjun
B.Sc in Computer Science & Engineering(CSE).

3. What is Bootstrap?
“The most popular HTML, CSS, and JS framework
for developing responsive,mobile first projects
on the web.”

4. History of Bootstrap
• It was developed by Mark otto and Jacob Thornton in August 9,2011 at
Twitter ,US.
• Firstly its name was Twitter Blueprint, Then renamed as Bootstrap.
• On Jan 31, 2012 Bootstrap 2 was launched. This release added the
twelve- column grid layout and responsive design components.
• On Oct 29,2013 Bootstrap 3 was launched. This release moving to a
mobile first approach .
• At last, on July 27,2016 , Bootstrap 4 Alpha 3 is released.

5. Why use?
• Bootstrap is a giant collection of handy, reusable bits of code written in
HTML, CSS, and JavaScript.It’s also a front-end development
framework that enables developers & designers to quickly build fully
responsive websites.
• Bootstrap saves you from writing lots of CSS code, giving you more
time to spend on designing webpages.
• It’s also FREE!
• It’s currently hosted on GitHub and can be downloaded easily
from getbootstrap.com.

6. Why is Bootstrap
the go-to for web
developers?
• Bootstrap’s ResponsiveGrid
• Bootstrap’s ResponsiveImages
• Bootstrap’s Components
Navigation bars
Dropdowns
Progress bars
Thumbnails
…and more!
• Bootstrap’s JavaScript
• Bootstrap’s Documentation
• Bootstrap’s Customizability
• Bootstrap’s Community
• Bootstrap’s ExternalTemplates

7. Why Shouldn’t You Use Bootstrap?
Bootstrap Syntax
is Confusing!
1
Bootstrap Files
are Too Big!
2
Bootstrap Keeps
Me from Actually
Learning Code!
3

8. Join with me
Fb page : https://www.facebook.com/jajsofttech
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YouTube: https://www.youtube.com/c/JubairAhmedJunjun/videos?view_as=subscriber
LinkedIn : https://www.linkedin.com/in/jubair-ahmed-junjun-4ab6a0177/