Something About Bootstrap & WEB



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.

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.

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, 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.

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:
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8"> 
  </head>
</html>
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 <meta> tag inside the <head> element:
<meta name="viewport" content="width=device-width, initial-scale=1">
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

Bootstrap Grid System

Bootstrap's grid system allows up to 12 columns across the page.
If you do not want to use all 12 column individually, you can group the columns together to create wider columns:
span 1span 1span 1span 1span 1span 1span 1span 1span 1span 1span 1span 1
 span 4 span 4 span 4
span 4span 8
span 6span 6
span 12
Bootstrap's grid system is responsive, and the columns will re-arrange automatically depending on the screen size.

Grid Classes

The Bootstrap grid system has four classes:
  • xs (for phones)
  • sm (for tablets)
  • md (for desktops)
  • lg (for larger desktops)
The classes above can be combined to create more dynamic and flexible layouts.

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