How to Use Bootstrap Framework in Web page for responsive
In Bootstrap Example you will see how to add HTML 5 doctype Element and CSS properties.
HTML Web pages add the HTML 5 doctype at the starting of the web page with correct character set and the lang attribute Bootstrap Framework is mobile friendly for all media screen devices: Here in web pages Bootstrap 3 is designed to be responsive web pages and mobile devices.
How to use Bootstrap with responsive fixed width container
Highlight: In the meta tag content "width=device-width" is used to the width of the pages to follow the media screen device width, it varies according to the media screen devices.
consequently, The initial-scale=1 in meta tag part is used to set the initial zoom level when the web page is first loaded by the browser (firefox, chrome, safari, etc.) Containers: In Bootstrap container class is used to wrap the site contents. There is the following two type of container classes.
The .container class is used to provides a responsive fixed width container.
The .container-fluid is used to class provides a full-width container, spanning the entire width of the viewport.
therefore, here rel indicate you added stylesheet and type indicate the text/css file and href indicate the CSS
as a result, the file path (here you will add the CSS file path) as above example.
as a result, you will see in the CSS path the bootstrap.css file exit in CSS folder so the path will be css/bootstrap.css