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Bootstrap 3 Tutorial

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Bootstrap is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile-first web sites.

Bootstrap is completely free to download and use!

Start learning Bootstrap now!

Try it Yourself Examples

This Bootstrap tutorial contains hundreds of Bootstrap examples.

With our online editor, you can edit the code, and click on a button to view the result.

Bootstrap Example

<div class="container">
  <div class="jumbotron">
    <h1>My First Bootstrap Page</h1>
    <p>Resize this responsive page to see the effect!</p>
  </div>
  <div class="row">
    <div class="col-sm-4">
      <h3>Column 1</h3>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit...</p>
      <p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris...</p>
    </div>
    <div class="col-sm-4">
      <h3>Column 2</h3>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit...</p>
      <p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris...</p>
    </div>
    <div class="col-sm-4">
      <h3>Column 3</h3>
      <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit...</p>
      <p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris...</p>
    </div>
  </div>
</div>
Try it Yourself »

Click on the "Try it Yourself" button to see how it works.

Bootstrap Quiz Test

Test your Bootstrap skills at w3ii!

Start Bootstrap Quiz!

Bootstrap References

At w3ii you will find a complete Bootstrap reference of all CSS classes, Components, and JavaScript plugins - all with "Try it Yourself" examples:


Bootstrap Themes

We have made some Themes you can play around with. They are completely free to use:

Did You Know?

W3.CSS is an alternative to Bootstrap.

W3.CSS is smaller, faster, and easier to use.

If you want to learn W3.CSS, go to our W3.CSS Tutorial.


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