Bootstrap 3
Bootstrap 3
Bootstrap is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first websites.
Bootstrap is completely free to download and use!
What is Bootstrap?
- Bootstrap is a free front-end framework for faster and easier web development
- Bootstrap includes HTML and CSS based design templates for typography, forms, buttons, tables, navigation, modals, image carousels and many other, as well as optional JavaScript plugins
- Bootstrap also gives you the ability to easily create responsive designs
What is Responsive Web Design?
Responsive web design is about creating web sites which automatically adjust themselves to look good on all devices, from small phones to large desktops.
Bootstrap History
Bootstrap was developed by Mark Otto and Jacob Thornton at Twitter, and released as an open source product in August 2011 on GitHub.
In June 2014 Bootstrap was the No.1 project on GitHub!
Why Use Bootstrap?
Advantages of Bootstrap:
- Easy to use: Anybody with just basic knowledge of HTML and CSS can start using Bootstrap
- Responsive features: Bootstrap's responsive CSS adjusts to phones, tablets, and desktops
- Mobile-first approach: In Bootstrap 3, mobile-first styles are part of the core framework
- Browser compatibility: Bootstrap is compatible with all modern browsers (Chrome, Firefox, Internet Explorer, Edge, Safari, and Opera)
Where to Get Bootstrap?
There are two ways to start using Bootstrap on your own web site.
You can:
- Download Bootstrap from getbootstrap.com
- Include Bootstrap from a CDN
Downloading Bootstrap
If you want to download and host Bootstrap yourself, go to getbootstrap.com, and follow the instructions there.
Bootstrap CDN
If you don't want to download and host Bootstrap yourself, you can include it from a CDN (Content Delivery Network).
MaxCDN provides CDN support for Bootstrap's CSS and JavaScript. You must also include jQuery:
One advantage of using the Bootstrap CDN:
Many users already have downloaded Bootstrap from MaxCDN when visiting another site. As a result, it will be loaded from cache when they visit your site, which leads to faster loading time. Also, most CDN's will make sure that once a user requests a file from it, it will be served from the server closest to them, which also leads to faster loading time.
jQuery
Bootstrap uses jQuery for JavaScript plugins (like modals, tooltips, etc). However, if you just use the CSS part of Bootstrap, you don't need jQuery.
Basic Bootstrap Page
The following example shows the code for a basic Bootstrap page (with a responsive fixed width container):