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>
<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:
- The
.containerclass provides a responsive fixed width container - The
.container-fluidclass 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 1 span 1 span 1 span 1 span 1 span 1 span 1 span 1 span 1 span 1 span 1 span 1 span 4 span 4 span 4 span 4 span 8 span 6 span 6 span 12
Bootstrap's grid system is responsive, and the columns will re-arrange automatically depending on the screen size.
| span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 | span 1 |
| span 4 | span 4 | span 4 | |||||||||
| span 4 | span 8 | ||||||||||
| span 6 | span 6 | ||||||||||
| span 12 | |||||||||||
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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