Collapse

Toggle the visibility of content across your project with a few classes and our JavaScript plugins.

Bootstrap 4 documentation
How it works

The collapse JavaScript plugin is used to show and hide content. Buttons or anchors are used as triggers that are mapped to specific elements you toggle. Collapsing an element will animate the height from its current value to 0. Given how CSS handles animations, you cannot use padding on a .collapse element. Instead, use the class as an independent wrapping element.

Example

Click the buttons below to show and hide another element via class changes:

  • .collapse hides content
  • .collapsing is applied during transitions
  • .collapse.show shows content

You can use a link with the href attribute, or a button with the data-target attribute. In both cases, the data-toggle="collapse" is required.

Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. 
                                                        
<p>
    <a class="btn btn-primary" data-toggle="collapse" href="#collapseExample" role="button" aria-expanded="false" aria-controls="collapseExample">
        Link with href
    </a>
    <button class="btn btn-primary" type="button" data-toggle="collapse" data-target="#collapseExample" aria-expanded="false" aria-controls="collapseExample">
        Button with data-target
    </button>
</p>
<div class="collapse" id="collapseExample">
    <div class="card card-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
    </div>
</div>
Multiple targets

A <button> or <a> can show and hide multiple elements by referencing them with a JQuery selector in its href or data-target attribute. Multiple <button> or <a> can show and hide an element if they each reference it with their href or data-target attribute

Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. 
                                                        
<p>
    <a class="btn btn-primary" data-toggle="collapse" href="#multiCollapseExample1" role="button" aria-expanded="false" aria-controls="multiCollapseExample1">Toggle first element</a>
    <button class="btn btn-primary" type="button" data-toggle="collapse" data-target="#multiCollapseExample2" aria-expanded="false" aria-controls="multiCollapseExample2">Toggle second element</button>
    <button class="btn btn-primary" type="button" data-toggle="collapse" data-target=".multi-collapse" aria-expanded="false" aria-controls="multiCollapseExample1 multiCollapseExample2">Toggle both elements</button>
</p>
<div class="row">
    <div class="col">
        <div class="collapse multi-collapse" id="multiCollapseExample1">
        <div class="card card-body">
            Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
        </div>
        </div>
    </div>
    <div class="col">
        <div class="collapse multi-collapse" id="multiCollapseExample2">
        <div class="card card-body">
            Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident.
        </div>
        </div>
    </div>
</div>
Default accordion

Using the card component, you can extend the default collapse behavior to create an accordion. To properly achieve the accordion style, be sure to use .accordion as a wrapper.

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision. 

                                                        
<!--Accordion-->
<div class="accordion" id="accordionExample1">
    <div class="card card-sm card-body shadow-sm border-soft border">
        <div data-target="#panel-1" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="h6 mb-0 font-weight-bold">Our Company</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-1">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.
                </p>
            </div>
        </div>
    </div>
    <div class="card card-sm card-body shadow-sm border-soft border">
        <div data-target="#panel-2" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="h6 mb-0 font-weight-bold">Pixel Components</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-2">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.                                        </p>
            </div>
        </div>
    </div>
    <div class="card card-sm card-body shadow-sm border-soft border">
        <div data-target="#panel-3" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="h6 mb-0 font-weight-bold">Licenses</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-3">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.                                        </p>
            </div>
        </div>
    </div>
</div>
<!--End of Accordion-->
Accordion with icon

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision. 

                                                        
<!--Accordion-->
<div class="accordion">
    <div class="card card-sm card-body shadow-sm border-soft border">
        <div data-target="#panel-4" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="icon-title h6 mb-0 font-weight-bold"><i class="fab fa-leanpub"></i>Our Company</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-4">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.
                </p>
            </div>
        </div>
    </div>
    <div class="card card-sm card-body shadow-sm border-soft border">
        <div data-target="#panel-5" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="icon-title h6 mb-0 font-weight-bold"><i class="fas fa-box-open"></i>Pixel Components</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-5">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.                                        </p>
            </div>
        </div>
    </div>
    <div class="card card-sm card-body shadow-sm border-soft border">
        <div data-target="#panel-6" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="icon-title h6 mb-0 font-weight-bold"><i class="fas fa-donate"></i>Licenses</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-6">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.                                        </p>
            </div>
        </div>
    </div>
</div>
<!--End of Accordion-->
Accordion with border

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.

At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision. 

                                                        
<!--Accordion-->
<div class="accordion">
    <div class="card card-sm card-body border border-soft">
        <div data-target="#panel-7" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="icon-title h6 mb-0"><i class="fab fa-leanpub"></i>Our Company</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-7">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.
                </p>
            </div>
        </div>
    </div>
    <div class="card card-sm card-body border border-soft">
        <div data-target="#panel-8" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="icon-title h6 mb-0"><i class="fas fa-box-open"></i>Pixel Components</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-8">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.                                        </p>
            </div>
        </div>
    </div>
    <div class="card card-sm card-body border border-soft">
        <div data-target="#panel-9" class="accordion-panel-header" data-toggle="collapse" role="button" aria-expanded="false" aria-controls="panel-1">
            <span class="icon-title h6 mb-0"><i class="fas fa-donate"></i>Licenses</span>
            <span class="icon"><i class="fas fa-plus"></i></span>
        </div>
        <div class="collapse" id="panel-9">
            <div class="pt-3">
                <p class="mb-0">
                    At Themesberg, our mission has always been focused on bringing openness and transparency to the design process. We've always believed that by providing a space where designers can share ongoing work not only empowers them to make better products, it also helps them grow. We're proud to be a part of creating a more open culture and to continue building a product that supports this vision.                                        </p>
            </div>
        </div>
    </div>
</div>
<!--End of Accordion-->
Accessibility

Be sure to add aria-expanded to the control element. This attribute explicitly conveys the current state of the collapsible element tied to the control to screen readers and similar assistive technologies. If the collapsible element is closed by default, the attribute on the control element should have a value of aria-expanded="false". If you’ve set the collapsible element to be open by default using the show class, set aria-expanded="true" on the control instead. The plugin will automatically toggle this attribute on the control based on whether or not the collapsible element has been opened or closed (via JavaScript, or because the user triggered another control element also tied to the same collapsbile element). If the control element’s HTML element is not a button (e.g., an <a> or <div>), the attribute should be added to the element.

If your control element is targeting a single collapsible element – i.e. the data-target attribute is pointing to an id selector – you should add the aria-controls attribute to the control element, containing the id of the collapsible element. Modern screen readers and similar assistive technologies make use of this attribute to provide users with additional shortcuts to navigate directly to the collapsible element itself.

Note that Bootstrap’s current implementation does not cover the various keyboard interactions described in the WAI-ARIA Authoring Practices 1.1 accordion pattern - you will need to include these yourself with custom JavaScript.

Usage

The collapse plugin utilizes a few classes to handle the heavy lifting:

  • .collapse hides the content
  • .collapse.show shows the content
  • .collapsing is added when the transition starts, and removed when it finishes

These classes can be found in _transitions.scss.

Via data attributes

The collapse plugin utilizes a few classes to handle the heavy lifting:

Just add data-toggle="collapse" and a data-target to the element to automatically assign control of one or more collapsible elements. The data-target attribute accepts a CSS selector to apply the collapse to. Be sure to add the class collapse to the collapsible element. If you'd like it to default open, add the additional class show.

To add accordion-like group management to a collapsible area, add the data attribute data-parent="#selector". Refer to the demo to see this in action.

JavaScript behavior

For more information, see the official Bootstrap documentation.