Boot strap
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Bootstrap is a leading HTML, CSS, and JavaScript framework that facilitates the development of responsive, mobile-first websites, which can be implemented via download or CDN. The framework includes essential features like a grid system, containers, and various UI components such as jumbotrons and navigation bars, designed to enhance user experience across devices. Key practices include using the HTML5 doctype, mobile-first design principles, and properly configuring meta tags for responsive rendering.
Boot strap
- 1. BootStrap
- 2. Introduction • Bootstrap is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first web sites.
- 3. 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 • <!-- Latest compiled and minified CSS --> <link rel="stylesheet"href="http://maxcdn.bootstrapcdn.com/boots trap/3.3.6/css/bootstrap.min.css"> <!-- jQuery library --> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jq uery.min.js"></script> <!-- Latest compiled JavaScript --> <script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/b ootstrap.min.js"></script>
- 4. Create First Web Page With Bootstrap 1. Add the HTML5 doctype 2. Bootstrap 3 is mobile-first 3. Containers 4. Grid System 5. Collapse 6. Jumbotron 7. Page Header 8. Navigation bar
- 5. 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>
- 6. 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=devi ce-width, initial-scale=1">
- 7. 3. Containers • Bootstrap also requires a containing element to wrap site contents. • There are two container classes to choose from: • The .container class provides a responsive fixed width container • The .container-fluid class provides a full width container, spanning the entire width of the viewport • Demo
- 8. Bootstrap Grid System Bootstrap's grid system allows up to 12 columns across the page. The Bootstrap grid system has four classes: • xs (for phones) • sm (for tablets) • md (for desktops) • lg (for larger desktops)
- 10. Bootstrap Grid System Example • <div class="row"> <div class="col-sm-4">.col-sm-4</div> <div class="col-sm-8">.col-sm-8</div> </div> • Demo
- 11. Bootstrap Collapse • Collapsibles are useful when you want to hide and show large amount of content: • <button data-toggle="collapse" data- target="#demo">Collapsible</button> <div id="demo" class="collapse"> Write some text.... </div> • Demo
- 12. Bootstrap JS Collapse • $(document).ready(function(){ $("#demo").on("hide.bs.collapse", function(){ $(".btn").html('<span class="glyphicon glyphicon-collapse-down"></span> Open'); }); $("#demo").on("show.bs.collapse", function(){ $(".btn").html('<span class="glyphicon glyphicon-collapse-up"></span> Close'); }); }); • Demo
- 13. Bootstrap Jumbotron • A jumbotron indicates a big box for calling extra attention to some special content or information. • A jumbotron is displayed as a grey box with rounded corners. It also enlarges the font sizes of the text inside it. • Use a <div> element with class .jumbotron to create a jumbotron:
- 14. Page Header • Use a <div> element with class .page-header to create a page header: <div class="page-header"> <h1>Example Page Header</h1> </div> • Demo
- 15. Bootstrap Navigation Bar • A navigation bar is a navigation header that is placed at the top of the page: • With Bootstrap, a navigation bar can extend or collapse, depending on the screen size. • A standard navigation bar is created with <nav class="navbar navbar-default"> • Demo
- 16. Bootstrap Inverted Navigation Bar • If you don't like the style of the default navigation bar, Bootstrap provides an alternative, black navbar: • Just change the .navbar-default class into .navbar-inverse: • Demo
- 17. Bootstrap Fixed Navigation Bar • The navigation bar can also be fixed at the top or at the bottom of the page. • A fixed navigation bar stays visible in a fixed position (top or bottom) independent of the page scroll. • The .navbar-fixed-top class makes the navigation bar fixed at the top: • The .navbar-fixed-bottom class makes the navigation bar stay at the bottom: • Demo
- 18. Bootstrap Navigation Bar with Dropdown • Navigation bars can also hold dropdown menus. • Demo
- 19. Bootstrap Right Aligned Navigation Bar • The .navbar-right class is used to right-align navigation bar buttons. • In the following example we insert a "Sign Up" button and a "Login" button to the right in the navigation bar. We also add a glyphicon on each of the two new buttons: • Demo
- 20. Collapsing The Navigation Bar • The navigation bar takes up too much space on a small screen. • We should hide the navigation bar; and only show it when it is needed. • In the following example the navigation bar is replaced by a button in the top right corner. Only when the button is clicked, the navigation bar will be displayed: • Demo
- 21. Online Resources • http://www.w3schools.com/bootstrap/bootst rap_navbar.asp • http://getbootstrap.com/ • https://bootstrapdocs.com/