# What is Bootstrap

Build responsive, mobile-first projects on the web with the world’s most popular front-end component library.

## Bootstrap

Bootstrap is an open source toolkit for developing with HTML, CSS, and JS. Quickly prototype your ideas or build your entire app with our Sass variables and mixins, responsive grid system, extensive prebuilt components, and powerful plugins.

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 Examples

# My First Bootstrap Page

Resize this responsive page to see the effect!

### Column 1

Lorem ipsum dolor..

### Column 2

Lorem ipsum dolor..

### Column 3

Lorem ipsum dolor..

Copy

    <div class="bg-light text-center border-radius-lg py-4 mb-4">
        <h1>My First Bootstrap Page</h1>
        <p>Resize this responsive page to see the effect!</p>
        </div>

        <div class="container">
        <div class="row">
            <div class="col-sm-4">
            <h3>Column 1</h3>
            <p>Lorem ipsum dolor..</p>
            </div>
            <div class="col-sm-4">
            <h3>Column 2</h3>
            <p>Lorem ipsum dolor..</p>
            </div>
            <div class="col-sm-4">
            <h3>Column 3</h3>
            <p>Lorem ipsum dolor..</p>
            </div>
        </div>
        </div>