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Bootstrap 3 教程

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

Bootstrap is completely free to download and use!

Start learning Bootstrap now » Learn Bootstrap

Try it Yourself Examples

This Bootstrap tutorial contains hundreds of Bootstrap examples.

通过本站的在线编辑器,你可以在线修改代码,并运行查看结果。

Responsive Bootstrap Page

Bootstrap 实例

<div class="jumbotron text-center">
  <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>
亲自试一试 »

点击 "Try it Yourself" 按钮查看运行结果。



Bootstrap 练习

学习训练

习题:

Add the correct class name to transform the list below into a pagination menu.

<ul class="">
  <li><a href="#">1</a></li>
  <li><a href="#">2</a></li>
  <li><a href="#">3</a></li>
  <li><a href="#">4</a></li>
  <li><a href="#">5</a></li>
</ul>

开始练习


Bootstrap 测验

Test your Bootstrap skills at W3Schools!

Start Bootstrap Quiz!


Bootstrap 参考手册

At W3Schools you will find a complete Bootstrap reference of all CSS classes, Components, and JavaScript plugins - all with "Try it Yourself" examples:


Bootstrap Themes / Templates

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


Bootstrap 3 vs. Bootstrap 4

Bootstrap 4 is the newest version of Bootstrap; with new components, faster stylesheet and more responsiveness.

Bootstrap 4 supports the latest, stable releases of all major browsers and platforms. However, Internet Explorer 9 and down is not supported.

If you require IE8-9 support, use Bootstrap 3. It is the most stable version of Bootstrap, and it is still supported by the team for critical bugfixes and documentation changes. However, no new features will be added to it.

Go To Bootstrap 4 »

Did You Know?

W3.CSS is an excellent 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.