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With Bootstrap 2, we've simplified the base class: .alert instead of .alert-message. We've also reduced the minimum required markup—no <p> is required by default, just the outer <div>.


For a more durable component with less code, we've removed the differentiating look for block alerts, messages that come with more padding and typically more text. The class also has changed to .alert-block.


Bootstrap comes with a great jQuery plugin that supports alert messages, making dismissing them quick and easy.

Get the plugin »


Wrap your message and an optional close icon in a div with simple class.

× 快消品行业企业使命 Best check yo self, you're not looking too good.
<div class="alert">  <a class="close" data-dismiss="alert">×</a>  <strong>Warning!</strong> Best check yo self, you're not looking too good.</div>

Easily extend the standard alert message with two optional classes: .alert-block for more padding and text controls and .alert-heading for a matching heading.



Best check yo self, you're not looking too good. Nulla vitae elit libero, a pharetra augue. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

<div class="alert alert-block">  <a class="close" data-dismiss="alert">×</a>  <h4 class="alert-heading">Warning!</h4>  Best check yo self, you're not...</div>


Error or danger

× 快消品行业什么毛利大 Change a few things up and try submitting again.
<div class="alert alert-error">  ...</div>


× 库销比多少合理快消品行业 You successfully read this important alert message.
<div class="alert alert-success">  ...</div>


× 快消品行业企业使命 This alert needs your attention, but it's not super important.
<div class="alert alert-info">  ...</div>

/// Examples and markup


Default progress bar with a vertical gradient.

<div class="progress">  <div class="bar"       style="width: 60%;"></div></div>


Uses a gradient to create a striped effect (no IE).

<div class="progress progress-striped">  <div class="bar"       style="width: 20%;"></div></div>


Takes the striped example and animates it (no IE).

<div class="progress progress-striped     active">  <div class="bar"       style="width: 40%;"></div></div>

/// Options and browser support

Additional colors

Progress bars use some of the same button and alert classes for consistent styles.

Striped bars

Similar to the solid colors, we have varied striped progress bars.


Progress bars use CSS3 transitions, so if you dynamically adjust the width via javascript, it will smoothly resize.

If you use the .active class, your .progress-striped progress bars will animate the stripes left to right.

Browser support

Progress bars use CSS3 gradients, transitions, and animations to achieve all their effects. These features are not supported in IE7-9 or older versions of Firefox.

Opera and IE do not support animations at this time.

/// Wells

Use the well as a simple effect on an element to give it an inset effect.

Look, I'm in a well!
<div class="well">  ...</div>

/// Close icon

Use the generic close icon for dismissing content like modals and alerts.


<a class="close">&times;</a>
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