We can create a responsive and beautiful website using various predefined classes. By using those classes it makes the development easy and simple. This is provided by Bootstrap.
There are different versions of Bootstrap:
We can download the package and link the source file to our website and use it. Or, we can use CDN and add to our website.
You can copy and paste the following CDN to work with Bootstrap
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" />
https://code.jquery.com/jquery-3.2.1.slim.min.js https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js