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untung99.homes: Bootstrap Get Started

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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 Example

Resize this responsive page to see the effect!

 

   

     

Column 1

Lorem ipsum
dolor..

   

   

     

Column 2

Lorem ipsum
dolor..

   

   

     

Column 3

Lorem ipsum
dolor..

   

 




Try it Yourself »

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)

Bootstrap Versions

This tutorial follows Bootstrap 3, which was released in 2013. However, we also cover newer versions; Bootstrap 4 (released 2018) and Bootstrap 5 (released 2021).

Bootstrap 5 is the newest version of Bootstrap;
with new components, faster stylesheets, more responsiveness etc. It supports the latest, stable releases of all major browsers and
platforms. However, Internet Explorer 11 and down is not supported.

The main differences between Bootstrap 5 and Bootstrap 3 & 4, is that
Bootstrap 5 has switched to JavaScript instead of jQuery.

Note: Bootstrap 3 and Bootstrap 4 is still supported by the team for critical bugfixes and documentation changes,
and it is perfectly safe to continue to use them. However, new features will NOT be added to
them.

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.

Create First Web Page With Bootstrap

1. Add the HTML5 doctype

Bootstrap uses HTML elements and CSS properties that require
the HTML5 doctype.

Always include the HTML5 doctype at the beginning of
the page, along with the lang attribute and the correct character set:

2. Bootstrap 3 is mobile-first

Bootstrap 3 is designed to be responsive to mobile devices. Mobile-first styles are
part of the core framework.

To ensure proper rendering and touch zooming, add the following tag inside the
element:

The width=device-width part sets the width of the page to follow the screen-width
of the device (which will vary depending on the device).

The initial-scale=1 part sets the initial zoom level when the page is first loaded
by the browser.

3. Containers

Bootstrap also requires a containing element to wrap site contents.

There are two container classes to choose from:

  1. The .container class provides a responsive fixed width container
  2. The .container-fluid class provides a full width container, spanning the entire width of the viewport

Two Basic Bootstrap Pages

The following example shows the code for a basic Bootstrap page (with a responsive fixed width container):

The following example shows the code for a basic Bootstrap page (with a full width container):